diff --git a/app/sleep-detail.tsx b/app/sleep-detail.tsx
index a66696d..29f49ae 100644
--- a/app/sleep-detail.tsx
+++ b/app/sleep-detail.tsx
@@ -11,9 +11,6 @@ import { router } from 'expo-router';
 import React, { useCallback, useEffect, useState } from 'react';
 import {
   ActivityIndicator,
-  Animated,
-  Modal,
-  Pressable,
   ScrollView,
   StyleSheet,
   Text,
@@ -22,6 +19,8 @@ import {
 } from 'react-native';
 
 import { HeaderBar } from '@/components/ui/HeaderBar';
+import { InfoModal, type SleepDetailData } from '@/components/sleep/InfoModal';
+import { SleepStagesInfoModal } from '@/components/sleep/SleepStagesInfoModal';
 import { Colors } from '@/constants/Colors';
 import { useColorScheme } from '@/hooks/useColorScheme';
 
@@ -67,21 +66,11 @@ type HeartRateData = {
   value: number;
 };
 
-// 睡眠详情数据类型
-type SleepDetailData = {
-  sleepScore: number;
-  totalSleepTime: number;
-  sleepQualityPercentage: number;
-  bedtime: string;
-  wakeupTime: string;
-  timeInBed: number;
+// 睡眠详情数据类型从 InfoModal 组件导入，但需要扩展以包含其他字段
+type ExtendedSleepDetailData = SleepDetailData & {
   sleepStages: SleepStageStats[];
   rawSleepSamples: SleepSample[];
-  averageHeartRate: number | null;
   sleepHeartRateData: HeartRateData[];
-  sleepEfficiency: number;
-  qualityDescription: string;
-  recommendation: string;
 };
 
 // 工具函数
@@ -349,7 +338,7 @@ const getSleepQualityInfo = (sleepScore: number): { description: string; recomme
 };
 
 // 主函数：获取完整的睡眠详情数据
-const fetchSleepDetailData = async (date: Date): Promise<SleepDetailData | null> => {
+const fetchSleepDetailData = async (date: Date): Promise<ExtendedSleepDetailData | null> => {
   try {
     console.log('开始获取睡眠详情数据...', date);
 
@@ -424,7 +413,7 @@ const fetchSleepDetailData = async (date: Date): Promise<SleepDetailData | null>
     console.log('睡眠得分:', sleepScore);
     console.log('========================');
 
-    const sleepDetailData: SleepDetailData = {
+    const sleepDetailData: ExtendedSleepDetailData = {
       sleepScore,
       totalSleepTime,
       sleepQualityPercentage: sleepScore,
@@ -554,354 +543,16 @@ const SleepStageChart = ({
   );
 };
 
-// Sleep Grade Component 睡眠等级组件
-const SleepGradeCard = ({
-  icon,
-  grade,
-  range,
-  isActive = false
-}: {
-  icon: string;
-  grade: string;
-  range: string;
-  isActive?: boolean;
-}) => {
-  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
-  const colorTokens = Colors[theme];
+// SleepGradeCard 组件现在在 InfoModal 组件内部
 
-  const getGradeColor = (grade: string) => {
-    switch (grade) {
-      case '低': case '较差': return { bg: '#FECACA', text: '#DC2626' };
-      case '正常': case '一般': return { bg: '#D1FAE5', text: '#065F46' };
-      case '良好': return { bg: '#D1FAE5', text: '#065F46' };
-      case '优秀': return { bg: '#FEF3C7', text: '#92400E' };
-      default: return { bg: colorTokens.pageBackgroundEmphasis, text: colorTokens.textSecondary };
-    }
-  };
+// SleepStagesInfoModal 组件现在从独立文件导入
 
-  const colors = getGradeColor(grade);
-
-  return (
-    <View style={[
-      styles.gradeCard,
-      {
-        backgroundColor: isActive ? colors.bg : colorTokens.pageBackgroundEmphasis,
-        borderColor: isActive ? colors.text : 'transparent',
-      }
-    ]}>
-      <View style={styles.gradeCardLeft}>
-        <Ionicons name={icon as any} size={16} color={colors.text} />
-        <Text style={[
-          styles.gradeText,
-          { color: isActive ? colors.text : colorTokens.textSecondary }
-        ]}>
-          {grade}
-        </Text>
-      </View>
-      <Text style={[
-        styles.gradeRange,
-        { color: isActive ? colors.text : colorTokens.textSecondary }
-      ]}>
-        {range}
-      </Text>
-    </View>
-  );
-};
-
-// Sleep Stages Info Modal 组件
-const SleepStagesInfoModal = ({
-  visible,
-  onClose
-}: {
-  visible: boolean;
-  onClose: () => void;
-}) => {
-  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
-  const colorTokens = Colors[theme];
-  const slideAnim = useState(new Animated.Value(0))[0];
-
-  React.useEffect(() => {
-    if (visible) {
-      slideAnim.setValue(0);
-      Animated.spring(slideAnim, {
-        toValue: 1,
-        useNativeDriver: true,
-        tension: 100,
-        friction: 8,
-      }).start();
-    } else {
-      Animated.spring(slideAnim, {
-        toValue: 0,
-        useNativeDriver: true,
-        tension: 100,
-        friction: 8,
-      }).start();
-    }
-  }, [visible]);
-
-  const translateY = slideAnim.interpolate({
-    inputRange: [0, 1],
-    outputRange: [300, 0],
-  });
-
-  const opacity = slideAnim.interpolate({
-    inputRange: [0, 1],
-    outputRange: [0, 1],
-  });
-
-  return (
-    <Modal
-      transparent
-      visible={visible}
-      animationType="none"
-      onRequestClose={onClose}
-    >
-      <View style={styles.modalOverlay}>
-        <Pressable
-          style={StyleSheet.absoluteFillObject}
-          onPress={onClose}
-        />
-        <Animated.View
-          style={[
-            styles.sleepStagesModalContent,
-            {
-              backgroundColor: colorTokens.background,
-              transform: [{ translateY }],
-              opacity,
-            }
-          ]}
-        >
-          <View style={styles.sleepStagesModalInner}>
-            <View style={styles.modalHandle} />
-
-            <View style={styles.sleepStagesModalHeader}>
-              <Text style={[styles.sleepStagesModalTitle, { color: colorTokens.text }]}>
-                了解你的睡眠阶段
-              </Text>
-              <TouchableOpacity onPress={onClose} style={styles.infoModalCloseButton}>
-                <Ionicons name="close" size={24} color={colorTokens.textSecondary} />
-              </TouchableOpacity>
-            </View>
-
-            <ScrollView
-              style={styles.sleepStagesScrollView}
-              contentContainerStyle={styles.sleepStagesScrollContent}
-              showsVerticalScrollIndicator={false}
-              bounces={true}
-              scrollEnabled={true}
-            >
-              <Text style={[styles.sleepStagesDescription, { color: colorTokens.textSecondary }]}>
-                人们对睡眠阶段和睡眠质量有许多误解。有些人可能需要更多深度睡眠，其他人则不然。科学家和医生仍在探索不同睡眠阶段的作用及其对身体的影响。通过跟踪睡眠阶段并留意每天清晨的感受，你或许能深入了解自己的睡眠。
-              </Text>
-
-              {/* 清醒时间 */}
-              <View style={styles.sleepStageInfoCard}>
-                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
-                  <View style={styles.sleepStageInfoTitleContainer}>
-                    <View style={[styles.sleepStageDot, { backgroundColor: '#F59E0B' }]} />
-                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>清醒时间</Text>
-                  </View>
-                </View>
-                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
-                  一次睡眠期间，你可能会醒来几次。偶尔醒来很正常。可能你会立刻再次入睡，并不记得曾在夜间醒来。
-                </Text>
-              </View>
-
-              {/* 快速动眼睡眠 */}
-              <View style={styles.sleepStageInfoCard}>
-                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
-                  <View style={styles.sleepStageInfoTitleContainer}>
-                    <View style={[styles.sleepStageDot, { backgroundColor: '#EC4899' }]} />
-                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>快速动眼睡眠</Text>
-                  </View>
-                </View>
-                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
-                  这一睡眠阶段可能对学习和记忆产生一定影响。在此阶段，你的肌肉最为放松，眼球也会快速左右移动。这也是你大多数梦境出现的阶段。
-                </Text>
-              </View>
-
-              {/* 核心睡眠 */}
-              <View style={styles.sleepStageInfoCard}>
-                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
-                  <View style={styles.sleepStageInfoTitleContainer}>
-                    <View style={[styles.sleepStageDot, { backgroundColor: '#8B5CF6' }]} />
-                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>核心睡眠</Text>
-                  </View>
-                </View>
-                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
-                  这一阶段有时也称为浅睡期，与其他阶段一样重要。此阶段通常占据你每晚大部分的睡眠时间。对于认知至关重要的脑电波会在这一阶段产生。
-                </Text>
-              </View>
-
-              {/* 深度睡眠 */}
-              <View style={styles.sleepStageInfoCard}>
-                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
-                  <View style={styles.sleepStageInfoTitleContainer}>
-                    <View style={[styles.sleepStageDot, { backgroundColor: '#3B82F6' }]} />
-                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>深度睡眠</Text>
-                  </View>
-                </View>
-                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
-                  因为脑电波的特征，这一阶段也称为慢波睡眠。在此阶段，身体组织得到修复，并释放重要荷尔蒙。它通常出现在睡眠的前半段，且持续时间较长。深度睡眠期间，身体非常放松，因此相较于其他阶段，你可能更难在此阶段醒来。
-                </Text>
-              </View>
-            </ScrollView>
-          </View>
-        </Animated.View>
-      </View>
-    </Modal>
-  );
-};
-
-// Info Modal 组件
-const InfoModal = ({
-  visible,
-  onClose,
-  title,
-  type,
-  sleepData
-}: {
-  visible: boolean;
-  onClose: () => void;
-  title: string;
-  type: 'sleep-time' | 'sleep-quality';
-  sleepData: SleepDetailData;
-}) => {
-  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
-  const colorTokens = Colors[theme];
-  const slideAnim = useState(new Animated.Value(0))[0];
-
-  React.useEffect(() => {
-    if (visible) {
-      // 重置动画值确保每次打开都有动画
-      slideAnim.setValue(0);
-      Animated.spring(slideAnim, {
-        toValue: 1,
-        useNativeDriver: true,
-        tension: 100,
-        friction: 8,
-      }).start();
-    } else {
-      Animated.spring(slideAnim, {
-        toValue: 0,
-        useNativeDriver: true,
-        tension: 100,
-        friction: 8,
-      }).start();
-    }
-  }, [visible]);
-
-  const translateY = slideAnim.interpolate({
-    inputRange: [0, 1],
-    outputRange: [300, 0],
-  });
-
-  const opacity = slideAnim.interpolate({
-    inputRange: [0, 1],
-    outputRange: [0, 1],
-  });
-
-  // 根据实际睡眠时间计算等级
-  const getSleepTimeGrade = (totalSleepMinutes: number) => {
-    const hours = totalSleepMinutes / 60;
-    if (hours < 6) return 0; // 低
-    if ((hours >= 6 && hours < 7) || hours > 9) return 1; // 正常
-    if (hours >= 7 && hours < 8) return 2; // 良好
-    if (hours >= 8 && hours <= 9) return 3; // 优秀
-    return 1; // 默认正常
-  };
-
-  // 根据实际睡眠质量百分比计算等级
-  const getSleepQualityGrade = (qualityPercentage: number) => {
-    if (qualityPercentage < 55) return 0; // 较差
-    if (qualityPercentage < 70) return 1; // 一般
-    if (qualityPercentage < 85) return 2; // 良好
-    return 3; // 优秀
-  };
-
-  const currentSleepTimeGrade = getSleepTimeGrade(sleepData.totalSleepTime || 443); // 默认7h23m
-  const currentSleepQualityGrade = getSleepQualityGrade(sleepData.sleepQualityPercentage || 94); // 默认94%
-
-  const sleepTimeGrades = [
-    { icon: 'alert-circle-outline', grade: '低', range: '< 6h', isActive: currentSleepTimeGrade === 0 },
-    { icon: 'checkmark-circle-outline', grade: '正常', range: '6h - 7h or > 9h', isActive: currentSleepTimeGrade === 1 },
-    { icon: 'checkmark-circle', grade: '良好', range: '7h - 8h', isActive: currentSleepTimeGrade === 2 },
-    { icon: 'star', grade: '优秀', range: '8h - 9h', isActive: currentSleepTimeGrade === 3 },
-  ];
-
-  const sleepQualityGrades = [
-    { icon: 'alert-circle-outline', grade: '较差', range: '< 55%', isActive: currentSleepQualityGrade === 0 },
-    { icon: 'checkmark-circle-outline', grade: '一般', range: '55% - 69%', isActive: currentSleepQualityGrade === 1 },
-    { icon: 'checkmark-circle', grade: '良好', range: '70% - 84%', isActive: currentSleepQualityGrade === 2 },
-    { icon: 'star', grade: '优秀', range: '85% - 100%', isActive: currentSleepQualityGrade === 3 },
-  ];
-
-  const currentGrades = type === 'sleep-time' ? sleepTimeGrades : sleepQualityGrades;
-
-  const getDescription = () => {
-    if (type === 'sleep-time') {
-      return '睡眠最重要 - 它占据了你睡眠得分的一半以上。长时间的睡眠可以减少睡眠债务，但是规律的睡眠时间对于高质量的休息至关重要。';
-    } else {
-      return '睡眠质量综合评估您的睡眠效率、深度睡眠时长、REM睡眠比例等多个指标。高质量的睡眠不仅仅取决于时长，还包括睡眠的连续性和各睡眠阶段的平衡。';
-    }
-  };
-
-  return (
-    <Modal
-      transparent
-      visible={visible}
-      animationType="none"
-      onRequestClose={onClose}
-    >
-      <TouchableOpacity
-        style={styles.modalOverlay}
-        activeOpacity={1}
-        onPress={onClose}
-      >
-        <Animated.View style={[
-          styles.infoModalContent,
-          {
-            backgroundColor: colorTokens.background,
-            transform: [{ translateY }],
-            opacity,
-          }
-        ]}>
-          <View style={styles.modalHandle} />
-          <View style={styles.infoModalHeader}>
-            <Text style={[styles.infoModalTitle, { color: colorTokens.text }]}>
-              {title}
-            </Text>
-            <TouchableOpacity onPress={onClose} style={styles.infoModalCloseButton}>
-              <Ionicons name="close" size={20} color={colorTokens.textSecondary} />
-            </TouchableOpacity>
-          </View>
-
-          {/* 等级卡片区域 */}
-          <View style={styles.gradesContainer}>
-            {currentGrades.map((grade, index) => (
-              <SleepGradeCard
-                key={index}
-                icon={grade.icon}
-                grade={grade.grade}
-                range={grade.range}
-                isActive={grade.isActive}
-              />
-            ))}
-          </View>
-
-          <Text style={[styles.infoModalText, { color: colorTokens.textSecondary }]}>
-            {getDescription()}
-          </Text>
-        </Animated.View>
-      </TouchableOpacity>
-    </Modal>
-  );
-};
+// InfoModal 组件现在从独立文件导入
 
 export default function SleepDetailScreen() {
   const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
   const colorTokens = Colors[theme];
-  const [sleepData, setSleepData] = useState<SleepDetailData | null>(null);
+  const [sleepData, setSleepData] = useState<ExtendedSleepDetailData | null>(null);
   const [loading, setLoading] = useState(true);
   const [selectedDate] = useState(dayjs().toDate());
 
@@ -963,7 +614,7 @@ export default function SleepDetailScreen() {
   }
 
   // 如果没有数据，使用默认数据结构
-  const displayData: SleepDetailData = sleepData || {
+  const displayData: ExtendedSleepDetailData = sleepData || {
     sleepScore: 0,
     totalSleepTime: 0,
     sleepQualityPercentage: 0,
@@ -1586,81 +1237,7 @@ const styles = StyleSheet.create({
     color: '#9CA3AF',
     fontStyle: 'italic',
   },
-  // Info Modal 样式
-  modalOverlay: {
-    flex: 1,
-    backgroundColor: 'rgba(0, 0, 0, 0.5)',
-    justifyContent: 'flex-end',
-  },
-  infoModalContent: {
-    borderTopLeftRadius: 24,
-    borderTopRightRadius: 24,
-    paddingTop: 12,
-    paddingHorizontal: 20,
-    paddingBottom: 34,
-    minHeight: 200,
-    shadowColor: '#000',
-    shadowOffset: { width: 0, height: -4 },
-    shadowOpacity: 0.1,
-    shadowRadius: 16,
-    elevation: 8,
-  },
-  modalHandle: {
-    width: 36,
-    height: 4,
-    backgroundColor: '#D1D5DB',
-    borderRadius: 2,
-    alignSelf: 'center',
-    marginBottom: 20,
-  },
-  infoModalHeader: {
-    flexDirection: 'row',
-    justifyContent: 'space-between',
-    alignItems: 'center',
-    marginBottom: 16,
-  },
-  infoModalTitle: {
-    fontSize: 18,
-    fontWeight: '700',
-    letterSpacing: -0.3,
-  },
-  infoModalCloseButton: {
-    padding: 4,
-  },
-  infoModalText: {
-    fontSize: 15,
-    lineHeight: 22,
-    letterSpacing: -0.1,
-  },
-  // Grade Cards 样式
-  gradesContainer: {
-    marginBottom: 20,
-    gap: 8,
-  },
-  gradeCard: {
-    flexDirection: 'row',
-    justifyContent: 'space-between',
-    alignItems: 'center',
-    paddingHorizontal: 16,
-    paddingVertical: 12,
-    borderRadius: 12,
-    borderWidth: 1,
-  },
-  gradeCardLeft: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    gap: 8,
-  },
-  gradeText: {
-    fontSize: 16,
-    fontWeight: '600',
-    letterSpacing: -0.2,
-  },
-  gradeRange: {
-    fontSize: 16,
-    fontWeight: '700',
-    letterSpacing: -0.3,
-  },
+  // Info Modal 和 Grade Cards 样式已移动到独立组件中
   mockDataToggle: {
     paddingHorizontal: 12,
     paddingVertical: 6,
@@ -1798,73 +1375,7 @@ const styles = StyleSheet.create({
     height: '100%',
     borderRadius: 3,
   },
-  // Sleep Stages Modal 样式
-  sleepStagesModalContent: {
-    borderTopLeftRadius: 24,
-    borderTopRightRadius: 24,
-    height: '80%',
-    shadowColor: '#000',
-    shadowOffset: { width: 0, height: -4 },
-    shadowOpacity: 0.1,
-    shadowRadius: 16,
-    elevation: 8,
-  },
-  sleepStagesModalInner: {
-    flex: 1,
-    paddingTop: 12,
-    paddingHorizontal: 20,
-    paddingBottom: 34,
-  },
-  sleepStagesModalHeader: {
-    flexDirection: 'row',
-    justifyContent: 'space-between',
-    alignItems: 'center',
-    marginBottom: 20,
-  },
-  sleepStagesModalTitle: {
-    fontSize: 20,
-    fontWeight: '700',
-    letterSpacing: -0.4,
-  },
-  sleepStagesScrollView: {
-    flex: 1,
-  },
-  sleepStagesScrollContent: {
-    paddingBottom: 40,
-  },
-  sleepStagesDescription: {
-    fontSize: 15,
-    lineHeight: 22,
-    letterSpacing: -0.1,
-    marginBottom: 24,
-  },
-  sleepStageInfoCard: {
-    marginBottom: 20,
-  },
-  sleepStageInfoHeader: {
-    paddingBottom: 12,
-    marginBottom: 12,
-  },
-  sleepStageInfoTitleContainer: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    gap: 12,
-  },
-  sleepStageDot: {
-    width: 12,
-    height: 12,
-    borderRadius: 6,
-  },
-  sleepStageInfoTitle: {
-    fontSize: 18,
-    fontWeight: '600',
-    letterSpacing: -0.2,
-  },
-  sleepStageInfoContent: {
-    fontSize: 15,
-    lineHeight: 22,
-    letterSpacing: -0.1,
-  },
+  // Sleep Stages Modal 样式已移动到独立组件中
   // 睡眠时间标签样式
   sleepTimeLabels: {
     flexDirection: 'row',
diff --git a/components/sleep/InfoModal.tsx b/components/sleep/InfoModal.tsx
new file mode 100644
index 0000000..5005e3f
--- /dev/null
+++ b/components/sleep/InfoModal.tsx
@@ -0,0 +1,307 @@
+import { Ionicons } from '@expo/vector-icons';
+import React, { useState } from 'react';
+import {
+  Animated,
+  Modal,
+  StyleSheet,
+  Text,
+  TouchableOpacity,
+  View
+} from 'react-native';
+
+import { Colors } from '@/constants/Colors';
+import { useColorScheme } from '@/hooks/useColorScheme';
+
+// 睡眠详情数据类型
+export type SleepDetailData = {
+  sleepScore: number;
+  totalSleepTime: number;
+  sleepQualityPercentage: number;
+  bedtime: string;
+  wakeupTime: string;
+  timeInBed: number;
+  sleepStages: any[];
+  rawSleepSamples: any[];
+  averageHeartRate: number | null;
+  sleepHeartRateData: any[];
+  sleepEfficiency: number;
+  qualityDescription: string;
+  recommendation: string;
+};
+
+// Sleep Grade Component 睡眠等级组件
+const SleepGradeCard = ({
+  icon,
+  grade,
+  range,
+  isActive = false
+}: {
+  icon: string;
+  grade: string;
+  range: string;
+  isActive?: boolean;
+}) => {
+  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
+  const colorTokens = Colors[theme];
+
+  const getGradeColor = (grade: string) => {
+    switch (grade) {
+      case '低': case '较差': return { bg: '#FECACA', text: '#DC2626' };
+      case '正常': case '一般': return { bg: '#D1FAE5', text: '#065F46' };
+      case '良好': return { bg: '#D1FAE5', text: '#065F46' };
+      case '优秀': return { bg: '#FEF3C7', text: '#92400E' };
+      default: return { bg: colorTokens.pageBackgroundEmphasis, text: colorTokens.textSecondary };
+    }
+  };
+
+  const colors = getGradeColor(grade);
+
+  return (
+    <View style={[
+      styles.gradeCard,
+      {
+        backgroundColor: isActive ? colors.bg : colorTokens.pageBackgroundEmphasis,
+        borderColor: isActive ? colors.text : 'transparent',
+      }
+    ]}>
+      <View style={styles.gradeCardLeft}>
+        <Ionicons name={icon as any} size={16} color={colors.text} />
+        <Text style={[
+          styles.gradeText,
+          { color: isActive ? colors.text : colorTokens.textSecondary }
+        ]}>
+          {grade}
+        </Text>
+      </View>
+      <Text style={[
+        styles.gradeRange,
+        { color: isActive ? colors.text : colorTokens.textSecondary }
+      ]}>
+        {range}
+      </Text>
+    </View>
+  );
+};
+
+// Info Modal 组件
+export const InfoModal = ({
+  visible,
+  onClose,
+  title,
+  type,
+  sleepData
+}: {
+  visible: boolean;
+  onClose: () => void;
+  title: string;
+  type: 'sleep-time' | 'sleep-quality';
+  sleepData: SleepDetailData;
+}) => {
+  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
+  const colorTokens = Colors[theme];
+  const slideAnim = useState(new Animated.Value(0))[0];
+
+  React.useEffect(() => {
+    if (visible) {
+      // 重置动画值确保每次打开都有动画
+      slideAnim.setValue(0);
+      Animated.spring(slideAnim, {
+        toValue: 1,
+        useNativeDriver: true,
+        tension: 100,
+        friction: 8,
+      }).start();
+    } else {
+      Animated.spring(slideAnim, {
+        toValue: 0,
+        useNativeDriver: true,
+        tension: 100,
+        friction: 8,
+      }).start();
+    }
+  }, [visible]);
+
+  const translateY = slideAnim.interpolate({
+    inputRange: [0, 1],
+    outputRange: [300, 0],
+  });
+
+  const opacity = slideAnim.interpolate({
+    inputRange: [0, 1],
+    outputRange: [0, 1],
+  });
+
+  // 根据实际睡眠时间计算等级
+  const getSleepTimeGrade = (totalSleepMinutes: number) => {
+    const hours = totalSleepMinutes / 60;
+    if (hours < 6) return 0; // 低
+    if ((hours >= 6 && hours < 7) || hours > 9) return 1; // 正常
+    if (hours >= 7 && hours < 8) return 2; // 良好
+    if (hours >= 8 && hours <= 9) return 3; // 优秀
+    return 1; // 默认正常
+  };
+
+  // 根据实际睡眠质量百分比计算等级
+  const getSleepQualityGrade = (qualityPercentage: number) => {
+    if (qualityPercentage < 55) return 0; // 较差
+    if (qualityPercentage < 70) return 1; // 一般
+    if (qualityPercentage < 85) return 2; // 良好
+    return 3; // 优秀
+  };
+
+  const currentSleepTimeGrade = getSleepTimeGrade(sleepData.totalSleepTime || 443); // 默认7h23m
+  const currentSleepQualityGrade = getSleepQualityGrade(sleepData.sleepQualityPercentage || 94); // 默认94%
+
+  const sleepTimeGrades = [
+    { icon: 'alert-circle-outline', grade: '低', range: '< 6h', isActive: currentSleepTimeGrade === 0 },
+    { icon: 'checkmark-circle-outline', grade: '正常', range: '6h - 7h or > 9h', isActive: currentSleepTimeGrade === 1 },
+    { icon: 'checkmark-circle', grade: '良好', range: '7h - 8h', isActive: currentSleepTimeGrade === 2 },
+    { icon: 'star', grade: '优秀', range: '8h - 9h', isActive: currentSleepTimeGrade === 3 },
+  ];
+
+  const sleepQualityGrades = [
+    { icon: 'alert-circle-outline', grade: '较差', range: '< 55%', isActive: currentSleepQualityGrade === 0 },
+    { icon: 'checkmark-circle-outline', grade: '一般', range: '55% - 69%', isActive: currentSleepQualityGrade === 1 },
+    { icon: 'checkmark-circle', grade: '良好', range: '70% - 84%', isActive: currentSleepQualityGrade === 2 },
+    { icon: 'star', grade: '优秀', range: '85% - 100%', isActive: currentSleepQualityGrade === 3 },
+  ];
+
+  const currentGrades = type === 'sleep-time' ? sleepTimeGrades : sleepQualityGrades;
+
+  const getDescription = () => {
+    if (type === 'sleep-time') {
+      return '睡眠最重要 - 它占据了你睡眠得分的一半以上。长时间的睡眠可以减少睡眠债务，但是规律的睡眠时间对于高质量的休息至关重要。';
+    } else {
+      return '睡眠质量综合评估您的睡眠效率、深度睡眠时长、REM睡眠比例等多个指标。高质量的睡眠不仅仅取决于时长，还包括睡眠的连续性和各睡眠阶段的平衡。';
+    }
+  };
+
+  return (
+    <Modal
+      transparent
+      visible={visible}
+      animationType="none"
+      onRequestClose={onClose}
+    >
+      <TouchableOpacity
+        style={styles.modalOverlay}
+        activeOpacity={1}
+        onPress={onClose}
+      >
+        <Animated.View style={[
+          styles.infoModalContent,
+          {
+            backgroundColor: colorTokens.background,
+            transform: [{ translateY }],
+            opacity,
+          }
+        ]}>
+          <View style={styles.modalHandle} />
+          <View style={styles.infoModalHeader}>
+            <Text style={[styles.infoModalTitle, { color: colorTokens.text }]}>
+              {title}
+            </Text>
+            <TouchableOpacity onPress={onClose} style={styles.infoModalCloseButton}>
+              <Ionicons name="close" size={20} color={colorTokens.textSecondary} />
+            </TouchableOpacity>
+          </View>
+
+          {/* 等级卡片区域 */}
+          <View style={styles.gradesContainer}>
+            {currentGrades.map((grade, index) => (
+              <SleepGradeCard
+                key={index}
+                icon={grade.icon}
+                grade={grade.grade}
+                range={grade.range}
+                isActive={grade.isActive}
+              />
+            ))}
+          </View>
+
+          <Text style={[styles.infoModalText, { color: colorTokens.textSecondary }]}>
+            {getDescription()}
+          </Text>
+        </Animated.View>
+      </TouchableOpacity>
+    </Modal>
+  );
+};
+
+const styles = StyleSheet.create({
+  // Info Modal 样式
+  modalOverlay: {
+    flex: 1,
+    backgroundColor: 'rgba(0, 0, 0, 0.5)',
+    justifyContent: 'flex-end',
+  },
+  infoModalContent: {
+    borderTopLeftRadius: 24,
+    borderTopRightRadius: 24,
+    paddingTop: 12,
+    paddingHorizontal: 20,
+    paddingBottom: 34,
+    minHeight: 200,
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: -4 },
+    shadowOpacity: 0.1,
+    shadowRadius: 16,
+    elevation: 8,
+  },
+  modalHandle: {
+    width: 36,
+    height: 4,
+    backgroundColor: '#D1D5DB',
+    borderRadius: 2,
+    alignSelf: 'center',
+    marginBottom: 20,
+  },
+  infoModalHeader: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+    marginBottom: 16,
+  },
+  infoModalTitle: {
+    fontSize: 18,
+    fontWeight: '700',
+    letterSpacing: -0.3,
+  },
+  infoModalCloseButton: {
+    padding: 4,
+  },
+  infoModalText: {
+    fontSize: 15,
+    lineHeight: 22,
+    letterSpacing: -0.1,
+  },
+  // Grade Cards 样式
+  gradesContainer: {
+    marginBottom: 20,
+    gap: 8,
+  },
+  gradeCard: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+    paddingHorizontal: 16,
+    paddingVertical: 12,
+    borderRadius: 12,
+    borderWidth: 1,
+  },
+  gradeCardLeft: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 8,
+  },
+  gradeText: {
+    fontSize: 16,
+    fontWeight: '600',
+    letterSpacing: -0.2,
+  },
+  gradeRange: {
+    fontSize: 16,
+    fontWeight: '700',
+    letterSpacing: -0.3,
+  },
+});
\ No newline at end of file
diff --git a/components/sleep/SleepStagesInfoModal.tsx b/components/sleep/SleepStagesInfoModal.tsx
new file mode 100644
index 0000000..4e028c0
--- /dev/null
+++ b/components/sleep/SleepStagesInfoModal.tsx
@@ -0,0 +1,246 @@
+import { Ionicons } from '@expo/vector-icons';
+import React, { useState } from 'react';
+import {
+  Animated,
+  Modal,
+  Pressable,
+  ScrollView,
+  StyleSheet,
+  Text,
+  TouchableOpacity,
+  View
+} from 'react-native';
+
+import { Colors } from '@/constants/Colors';
+import { useColorScheme } from '@/hooks/useColorScheme';
+
+// Sleep Stages Info Modal 组件
+export const SleepStagesInfoModal = ({
+  visible,
+  onClose
+}: {
+  visible: boolean;
+  onClose: () => void;
+}) => {
+  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
+  const colorTokens = Colors[theme];
+  const slideAnim = useState(new Animated.Value(0))[0];
+
+  React.useEffect(() => {
+    if (visible) {
+      slideAnim.setValue(0);
+      Animated.spring(slideAnim, {
+        toValue: 1,
+        useNativeDriver: true,
+        tension: 100,
+        friction: 8,
+      }).start();
+    } else {
+      Animated.spring(slideAnim, {
+        toValue: 0,
+        useNativeDriver: true,
+        tension: 100,
+        friction: 8,
+      }).start();
+    }
+  }, [visible]);
+
+  const translateY = slideAnim.interpolate({
+    inputRange: [0, 1],
+    outputRange: [300, 0],
+  });
+
+  const opacity = slideAnim.interpolate({
+    inputRange: [0, 1],
+    outputRange: [0, 1],
+  });
+
+  return (
+    <Modal
+      transparent
+      visible={visible}
+      animationType="none"
+      onRequestClose={onClose}
+    >
+      <View style={styles.modalOverlay}>
+        <Pressable
+          style={StyleSheet.absoluteFillObject}
+          onPress={onClose}
+        />
+        <Animated.View
+          style={[
+            styles.sleepStagesModalContent,
+            {
+              backgroundColor: colorTokens.background,
+              transform: [{ translateY }],
+              opacity,
+            }
+          ]}
+        >
+          <View style={styles.sleepStagesModalInner}>
+            <View style={styles.modalHandle} />
+
+            <View style={styles.sleepStagesModalHeader}>
+              <Text style={[styles.sleepStagesModalTitle, { color: colorTokens.text }]}>
+                了解你的睡眠阶段
+              </Text>
+              <TouchableOpacity onPress={onClose} style={styles.infoModalCloseButton}>
+                <Ionicons name="close" size={24} color={colorTokens.textSecondary} />
+              </TouchableOpacity>
+            </View>
+
+            <ScrollView
+              style={styles.sleepStagesScrollView}
+              contentContainerStyle={styles.sleepStagesScrollContent}
+              showsVerticalScrollIndicator={false}
+              bounces={true}
+              scrollEnabled={true}
+            >
+              <Text style={[styles.sleepStagesDescription, { color: colorTokens.textSecondary }]}>
+                人们对睡眠阶段和睡眠质量有许多误解。有些人可能需要更多深度睡眠，其他人则不然。科学家和医生仍在探索不同睡眠阶段的作用及其对身体的影响。通过跟踪睡眠阶段并留意每天清晨的感受，你或许能深入了解自己的睡眠。
+              </Text>
+
+              {/* 清醒时间 */}
+              <View style={styles.sleepStageInfoCard}>
+                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
+                  <View style={styles.sleepStageInfoTitleContainer}>
+                    <View style={[styles.sleepStageDot, { backgroundColor: '#F59E0B' }]} />
+                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>清醒时间</Text>
+                  </View>
+                </View>
+                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
+                  一次睡眠期间，你可能会醒来几次。偶尔醒来很正常。可能你会立刻再次入睡，并不记得曾在夜间醒来。
+                </Text>
+              </View>
+
+              {/* 快速动眼睡眠 */}
+              <View style={styles.sleepStageInfoCard}>
+                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
+                  <View style={styles.sleepStageInfoTitleContainer}>
+                    <View style={[styles.sleepStageDot, { backgroundColor: '#EC4899' }]} />
+                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>快速动眼睡眠</Text>
+                  </View>
+                </View>
+                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
+                  这一睡眠阶段可能对学习和记忆产生一定影响。在此阶段，你的肌肉最为放松，眼球也会快速左右移动。这也是你大多数梦境出现的阶段。
+                </Text>
+              </View>
+
+              {/* 核心睡眠 */}
+              <View style={styles.sleepStageInfoCard}>
+                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
+                  <View style={styles.sleepStageInfoTitleContainer}>
+                    <View style={[styles.sleepStageDot, { backgroundColor: '#8B5CF6' }]} />
+                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>核心睡眠</Text>
+                  </View>
+                </View>
+                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
+                  这一阶段有时也称为浅睡期，与其他阶段一样重要。此阶段通常占据你每晚大部分的睡眠时间。对于认知至关重要的脑电波会在这一阶段产生。
+                </Text>
+              </View>
+
+              {/* 深度睡眠 */}
+              <View style={styles.sleepStageInfoCard}>
+                <View style={[styles.sleepStageInfoHeader, { borderBottomColor: colorTokens.border }]}>
+                  <View style={styles.sleepStageInfoTitleContainer}>
+                    <View style={[styles.sleepStageDot, { backgroundColor: '#3B82F6' }]} />
+                    <Text style={[styles.sleepStageInfoTitle, { color: colorTokens.text }]}>深度睡眠</Text>
+                  </View>
+                </View>
+                <Text style={[styles.sleepStageInfoContent, { color: colorTokens.textSecondary }]}>
+                  因为脑电波的特征，这一阶段也称为慢波睡眠。在此阶段，身体组织得到修复，并释放重要荷尔蒙。它通常出现在睡眠的前半段，且持续时间较长。深度睡眠期间，身体非常放松，因此相较于其他阶段，你可能更难在此阶段醒来。
+                </Text>
+              </View>
+            </ScrollView>
+          </View>
+        </Animated.View>
+      </View>
+    </Modal>
+  );
+};
+
+const styles = StyleSheet.create({
+  modalOverlay: {
+    flex: 1,
+    backgroundColor: 'rgba(0, 0, 0, 0.5)',
+    justifyContent: 'flex-end',
+  },
+  modalHandle: {
+    width: 36,
+    height: 4,
+    backgroundColor: '#D1D5DB',
+    borderRadius: 2,
+    alignSelf: 'center',
+    marginBottom: 20,
+  },
+  infoModalCloseButton: {
+    padding: 4,
+  },
+  // Sleep Stages Modal 样式
+  sleepStagesModalContent: {
+    borderTopLeftRadius: 24,
+    borderTopRightRadius: 24,
+    height: '80%',
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: -4 },
+    shadowOpacity: 0.1,
+    shadowRadius: 16,
+    elevation: 8,
+  },
+  sleepStagesModalInner: {
+    flex: 1,
+    paddingTop: 12,
+    paddingHorizontal: 20,
+    paddingBottom: 34,
+  },
+  sleepStagesModalHeader: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+    marginBottom: 20,
+  },
+  sleepStagesModalTitle: {
+    fontSize: 20,
+    fontWeight: '700',
+    letterSpacing: -0.4,
+  },
+  sleepStagesScrollView: {
+    flex: 1,
+  },
+  sleepStagesScrollContent: {
+    paddingBottom: 40,
+  },
+  sleepStagesDescription: {
+    fontSize: 15,
+    lineHeight: 22,
+    letterSpacing: -0.1,
+    marginBottom: 24,
+  },
+  sleepStageInfoCard: {
+    marginBottom: 20,
+  },
+  sleepStageInfoHeader: {
+    paddingBottom: 12,
+    marginBottom: 12,
+  },
+  sleepStageInfoTitleContainer: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 12,
+  },
+  sleepStageDot: {
+    width: 12,
+    height: 12,
+    borderRadius: 6,
+  },
+  sleepStageInfoTitle: {
+    fontSize: 18,
+    fontWeight: '600',
+    letterSpacing: -0.2,
+  },
+  sleepStageInfoContent: {
+    fontSize: 15,
+    lineHeight: 22,
+    letterSpacing: -0.1,
+  },
+});
\ No newline at end of file