diff --git a/app/_layout.tsx b/app/_layout.tsx
index e871cd8..aa2bace 100644
--- a/app/_layout.tsx
+++ b/app/_layout.tsx
@@ -9,7 +9,6 @@ import 'react-native-reanimated';
 import PrivacyConsentModal from '@/components/PrivacyConsentModal';
 import { useAppDispatch, useAppSelector } from '@/hooks/redux';
 import { useQuickActions } from '@/hooks/useQuickActions';
-import { clearAiCoachSessionCache } from '@/services/aiCoachSession';
 import { hrvMonitorService } from '@/services/hrvMonitor';
 import { notificationService } from '@/services/notifications';
 import { setupQuickActions } from '@/services/quickActions';
@@ -137,10 +136,6 @@ function Bootstrapper({ children }: { children: React.ReactNode }) {
         await setupQuickActions();
         logger.info('✅ 快捷动作初始化完成');
 
-        // 4. 清空 AI 教练会话缓存（轻量操作）
-        clearAiCoachSessionCache();
-        logger.info('✅ AI 教练缓存清理完成');
-
         // 5. 初始化喝水记录 Bridge
         initializeWaterRecordBridge();
         logger.info('✅ 喝水记录 Bridge 初始化完成');
diff --git a/app/food-library.tsx b/app/food-library.tsx
index faa4293..6f9f01b 100644
--- a/app/food-library.tsx
+++ b/app/food-library.tsx
@@ -10,6 +10,7 @@ import { addDietRecord, type CreateDietRecordDto } from '@/services/dietRecords'
 import { foodLibraryApi, type CreateCustomFoodDto } from '@/services/foodLibraryApi';
 import { fetchDailyNutritionData } from '@/store/nutritionSlice';
 import type { FoodItem, MealType, SelectedFoodItem } from '@/types/food';
+import { saveNutritionToHealthKit } from '@/utils/health';
 import { Ionicons } from '@expo/vector-icons';
 import { Image } from 'expo-image';
 import { useLocalSearchParams, useRouter } from 'expo-router';
@@ -178,7 +179,27 @@ export default function FoodLibraryScreen() {
           imageUrl: item.food.imageUrl,
         };
 
+        // 先保存到后端
         await addDietRecord(dietRecordData);
+
+        // 然后尝试同步到 HealthKit（非阻塞）
+        // 提取蛋白质、脂肪和碳水化合物数据
+        const { proteinGrams, fatGrams, carbohydrateGrams, mealTime } = dietRecordData;
+        
+        if (proteinGrams !== undefined || fatGrams !== undefined || carbohydrateGrams !== undefined) {
+          // 使用 catch 确保 HealthKit 同步失败不影响后端记录
+          saveNutritionToHealthKit(
+            {
+              proteinGrams: proteinGrams || undefined,
+              fatGrams: fatGrams || undefined,
+              carbohydrateGrams: carbohydrateGrams || undefined
+            },
+            mealTime
+          ).catch(error => {
+            // HealthKit 同步失败只记录日志，不影响用户体验
+            console.error('HealthKit 营养数据同步失败（不影响记录）:', error);
+          });
+        }
       }
 
       // 记录成功后，刷新当天的营养数据
diff --git a/ios/OutLive/HealthKitManager.m b/ios/OutLive/HealthKitManager.m
index f994b34..200d4e8 100644
--- a/ios/OutLive/HealthKitManager.m
+++ b/ios/OutLive/HealthKitManager.m
@@ -78,6 +78,19 @@ RCT_EXTERN_METHOD(getWaterIntakeFromHealthKit:(NSDictionary *)options
                   resolver:(RCTPromiseResolveBlock)resolver
                   rejecter:(RCTPromiseRejectBlock)rejecter)
 
+// Nutrition Data Methods
+RCT_EXTERN_METHOD(saveProteinToHealthKit:(NSDictionary *)options
+                  resolver:(RCTPromiseResolveBlock)resolver
+                  rejecter:(RCTPromiseRejectBlock)rejecter)
+
+RCT_EXTERN_METHOD(saveFatToHealthKit:(NSDictionary *)options
+                  resolver:(RCTPromiseResolveBlock)resolver
+                  rejecter:(RCTPromiseRejectBlock)rejecter)
+
+RCT_EXTERN_METHOD(saveCarbohydratesToHealthKit:(NSDictionary *)options
+                  resolver:(RCTPromiseResolveBlock)resolver
+                  rejecter:(RCTPromiseRejectBlock)rejecter)
+
 // Workout Data Methods
 RCT_EXTERN_METHOD(getRecentWorkouts:(NSDictionary *)options
                   resolver:(RCTPromiseResolveBlock)resolver
diff --git a/ios/OutLive/HealthKitManager.swift b/ios/OutLive/HealthKitManager.swift
index a058679..7861ad3 100644
--- a/ios/OutLive/HealthKitManager.swift
+++ b/ios/OutLive/HealthKitManager.swift
@@ -88,11 +88,23 @@ class HealthKitManager: RCTEventEmitter {
     static var dietaryWater: HKQuantityType? {
       return HKObjectType.quantityType(forIdentifier: .dietaryWater)
     }
+    static var dietaryProtein: HKQuantityType? {
+      return HKObjectType.quantityType(forIdentifier: .dietaryProtein)
+    }
+    static var dietaryFatTotal: HKQuantityType? {
+      return HKObjectType.quantityType(forIdentifier: .dietaryFatTotal)
+    }
+    static var dietaryCarbohydrates: HKQuantityType? {
+      return HKObjectType.quantityType(forIdentifier: .dietaryCarbohydrates)
+    }
     
     static var all: Set<HKSampleType> {
       var types: Set<HKSampleType> = []
       if let bodyMass = bodyMass { types.insert(bodyMass) }
       if let dietaryWater = dietaryWater { types.insert(dietaryWater) }
+      if let dietaryProtein = dietaryProtein { types.insert(dietaryProtein) }
+      if let dietaryFatTotal = dietaryFatTotal { types.insert(dietaryFatTotal) }
+      if let dietaryCarbohydrates = dietaryCarbohydrates { types.insert(dietaryCarbohydrates) }
       return types
     }
   }
@@ -1669,6 +1681,194 @@ class HealthKitManager: RCTEventEmitter {
     healthStore.execute(query)
   }
 
+  // MARK: - Nutrition Data Methods
+  
+  @objc
+  func saveProteinToHealthKit(
+    _ options: NSDictionary,
+    resolver: @escaping RCTPromiseResolveBlock,
+    rejecter: @escaping RCTPromiseRejectBlock
+  ) {
+    guard HKHealthStore.isHealthDataAvailable() else {
+      rejecter("HEALTHKIT_NOT_AVAILABLE", "HealthKit is not available on this device", nil)
+      return
+    }
+    
+    // Parse parameters
+    guard let amount = options["amount"] as? Double else {
+      rejecter("INVALID_PARAMETERS", "Amount is required", nil)
+      return
+    }
+    
+    let recordedAt: Date
+    if let recordedAtString = options["recordedAt"] as? String,
+       let date = parseDate(from: recordedAtString) {
+      recordedAt = date
+    } else {
+      recordedAt = Date()
+    }
+    
+    guard let proteinType = WriteTypes.dietaryProtein else {
+      rejecter("TYPE_NOT_AVAILABLE", "Protein type is not available", nil)
+      return
+    }
+    
+    // Create quantity sample (protein in grams)
+    let quantity = HKQuantity(unit: HKUnit.gram(), doubleValue: amount)
+    let sample = HKQuantitySample(
+      type: proteinType,
+      quantity: quantity,
+      start: recordedAt,
+      end: recordedAt,
+      metadata: nil
+    )
+    
+    // Save to HealthKit
+    healthStore.save(sample) { [weak self] (success, error) in
+      DispatchQueue.main.async {
+        if let error = error {
+          rejecter("SAVE_ERROR", "Failed to save protein: \(error.localizedDescription)", error)
+          return
+        }
+        
+        if success {
+          let result: [String: Any] = [
+            "success": true,
+            "amount": amount,
+            "recordedAt": self?.dateToISOString(recordedAt) ?? ""
+          ]
+          resolver(result)
+        } else {
+          rejecter("SAVE_FAILED", "Failed to save protein", nil)
+        }
+      }
+    }
+  }
+  
+  @objc
+  func saveFatToHealthKit(
+    _ options: NSDictionary,
+    resolver: @escaping RCTPromiseResolveBlock,
+    rejecter: @escaping RCTPromiseRejectBlock
+  ) {
+    guard HKHealthStore.isHealthDataAvailable() else {
+      rejecter("HEALTHKIT_NOT_AVAILABLE", "HealthKit is not available on this device", nil)
+      return
+    }
+    
+    // Parse parameters
+    guard let amount = options["amount"] as? Double else {
+      rejecter("INVALID_PARAMETERS", "Amount is required", nil)
+      return
+    }
+    
+    let recordedAt: Date
+    if let recordedAtString = options["recordedAt"] as? String,
+       let date = parseDate(from: recordedAtString) {
+      recordedAt = date
+    } else {
+      recordedAt = Date()
+    }
+    
+    guard let fatType = WriteTypes.dietaryFatTotal else {
+      rejecter("TYPE_NOT_AVAILABLE", "Fat type is not available", nil)
+      return
+    }
+    
+    // Create quantity sample (fat in grams)
+    let quantity = HKQuantity(unit: HKUnit.gram(), doubleValue: amount)
+    let sample = HKQuantitySample(
+      type: fatType,
+      quantity: quantity,
+      start: recordedAt,
+      end: recordedAt,
+      metadata: nil
+    )
+    
+    // Save to HealthKit
+    healthStore.save(sample) { [weak self] (success, error) in
+      DispatchQueue.main.async {
+        if let error = error {
+          rejecter("SAVE_ERROR", "Failed to save fat: \(error.localizedDescription)", error)
+          return
+        }
+        
+        if success {
+          let result: [String: Any] = [
+            "success": true,
+            "amount": amount,
+            "recordedAt": self?.dateToISOString(recordedAt) ?? ""
+          ]
+          resolver(result)
+        } else {
+          rejecter("SAVE_FAILED", "Failed to save fat", nil)
+        }
+      }
+    }
+  }
+
+  @objc
+  func saveCarbohydratesToHealthKit(
+    _ options: NSDictionary,
+    resolver: @escaping RCTPromiseResolveBlock,
+    rejecter: @escaping RCTPromiseRejectBlock
+  ) {
+    guard HKHealthStore.isHealthDataAvailable() else {
+      rejecter("HEALTHKIT_NOT_AVAILABLE", "HealthKit is not available on this device", nil)
+      return
+    }
+    
+    // Parse parameters
+    guard let amount = options["amount"] as? Double else {
+      rejecter("INVALID_PARAMETERS", "Amount is required", nil)
+      return
+    }
+    
+    let recordedAt: Date
+    if let recordedAtString = options["recordedAt"] as? String,
+       let date = parseDate(from: recordedAtString) {
+      recordedAt = date
+    } else {
+      recordedAt = Date()
+    }
+    
+    guard let carbohydratesType = WriteTypes.dietaryCarbohydrates else {
+      rejecter("TYPE_NOT_AVAILABLE", "Carbohydrates type is not available", nil)
+      return
+    }
+    
+    // Create quantity sample (carbohydrates in grams)
+    let quantity = HKQuantity(unit: HKUnit.gram(), doubleValue: amount)
+    let sample = HKQuantitySample(
+      type: carbohydratesType,
+      quantity: quantity,
+      start: recordedAt,
+      end: recordedAt,
+      metadata: nil
+    )
+    
+    // Save to HealthKit
+    healthStore.save(sample) { [weak self] (success, error) in
+      DispatchQueue.main.async {
+        if let error = error {
+          rejecter("SAVE_ERROR", "Failed to save carbohydrates: \(error.localizedDescription)", error)
+          return
+        }
+        
+        if success {
+          let result: [String: Any] = [
+            "success": true,
+            "amount": amount,
+            "recordedAt": self?.dateToISOString(recordedAt) ?? ""
+          ]
+          resolver(result)
+        } else {
+          rejecter("SAVE_FAILED", "Failed to save carbohydrates", nil)
+        }
+      }
+    }
+  }
+
   // MARK: - Workout Data Methods
 
   @objc
diff --git a/utils/health.ts b/utils/health.ts
index 050f719..1a6ff67 100644
--- a/utils/health.ts
+++ b/utils/health.ts
@@ -1139,6 +1139,114 @@ export async function saveWaterIntakeToHealthKit(amount: number, recordedAt?: st
   }
 }
 
+// 添加蛋白质记录到 HealthKit
+export async function saveProteinToHealthKit(grams: number, recordedAt?: string): Promise<boolean> {
+  try {
+    console.log('开始保存蛋白质记录到HealthKit...', { grams, recordedAt });
+
+    const options = {
+      amount: grams,
+      recordedAt: recordedAt || new Date().toISOString()
+    };
+
+    const result = await HealthKitManager.saveProteinToHealthKit(options);
+
+    if (result && result.success) {
+      console.log('蛋白质记录保存成功:', result);
+      return true;
+    } else {
+      console.error('蛋白质记录保存失败:', result);
+      return false;
+    }
+  } catch (error) {
+    console.error('添加蛋白质记录到 HealthKit 失败:', error);
+    return false;
+  }
+}
+
+// 添加脂肪记录到 HealthKit
+export async function saveFatToHealthKit(grams: number, recordedAt?: string): Promise<boolean> {
+  try {
+    console.log('开始保存脂肪记录到HealthKit...', { grams, recordedAt });
+
+    const options = {
+      amount: grams,
+      recordedAt: recordedAt || new Date().toISOString()
+    };
+
+    const result = await HealthKitManager.saveFatToHealthKit(options);
+
+    if (result && result.success) {
+      console.log('脂肪记录保存成功:', result);
+      return true;
+    } else {
+      console.error('脂肪记录保存失败:', result);
+      return false;
+    }
+  } catch (error) {
+    console.error('添加脂肪记录到 HealthKit 失败:', error);
+    return false;
+  }
+}
+
+// 添加碳水化合物记录到 HealthKit
+export async function saveCarbohydratesToHealthKit(grams: number, recordedAt?: string): Promise<boolean> {
+  try {
+    console.log('开始保存碳水化合物记录到HealthKit...', { grams, recordedAt });
+
+    const options = {
+      amount: grams,
+      recordedAt: recordedAt || new Date().toISOString()
+    };
+
+    const result = await HealthKitManager.saveCarbohydratesToHealthKit(options);
+
+    if (result && result.success) {
+      console.log('碳水化合物记录保存成功:', result);
+      return true;
+    } else {
+      console.error('碳水化合物记录保存失败:', result);
+      return false;
+    }
+  } catch (error) {
+    console.error('添加碳水化合物记录到 HealthKit 失败:', error);
+    return false;
+  }
+}
+
+// 批量保存营养数据到 HealthKit（蛋白质、脂肪和碳水化合物）
+export async function saveNutritionToHealthKit(
+  nutrition: { proteinGrams?: number; fatGrams?: number; carbohydrateGrams?: number },
+  recordedAt?: string
+): Promise<{ proteinSaved: boolean; fatSaved: boolean; carbohydrateSaved: boolean }> {
+  try {
+    console.log('开始批量保存营养数据到HealthKit...', { nutrition, recordedAt });
+
+    const results = await Promise.allSettled([
+      nutrition.proteinGrams && nutrition.proteinGrams > 0
+        ? saveProteinToHealthKit(nutrition.proteinGrams, recordedAt)
+        : Promise.resolve(false),
+      nutrition.fatGrams && nutrition.fatGrams > 0
+        ? saveFatToHealthKit(nutrition.fatGrams, recordedAt)
+        : Promise.resolve(false),
+      nutrition.carbohydrateGrams && nutrition.carbohydrateGrams > 0
+        ? saveCarbohydratesToHealthKit(nutrition.carbohydrateGrams, recordedAt)
+        : Promise.resolve(false),
+    ]);
+
+    const proteinSaved = results[0].status === 'fulfilled' ? results[0].value : false;
+    const fatSaved = results[1].status === 'fulfilled' ? results[1].value : false;
+    const carbohydrateSaved = results[2].status === 'fulfilled' ? results[2].value : false;
+
+    console.log('营养数据批量保存结果:', { proteinSaved, fatSaved, carbohydrateSaved });
+
+    return { proteinSaved, fatSaved, carbohydrateSaved };
+  } catch (error) {
+    console.error('批量保存营养数据到 HealthKit 失败:', error);
+    return { proteinSaved: false, fatSaved: false, carbohydrateSaved: false };
+  }
+}
+
 // 获取 HealthKit 中的饮水记录
 export async function getWaterIntakeFromHealthKit(options: HealthDataOptions): Promise<any[]> {
   try {
diff --git a/utils/healthKit.ts b/utils/healthKit.ts
index 6b2dbbd..3d088ac 100644
--- a/utils/healthKit.ts
+++ b/utils/healthKit.ts
@@ -43,6 +43,17 @@ export interface SleepDataResult {
   endDate: string;
 }
 
+export interface NutritionSaveOptions {
+  amount: number;      // Amount in grams
+  recordedAt?: string; // ISO8601 format, defaults to now
+}
+
+export interface NutritionSaveResult {
+  success: boolean;
+  amount: number;
+  recordedAt: string;
+}
+
 export interface HealthKitManagerInterface {
   /**
    * Request authorization to access HealthKit data
@@ -61,6 +72,24 @@ export interface HealthKitManagerInterface {
    * @param options Query options including date range and limit
    */
   getSleepData(options?: SleepDataOptions): Promise<SleepDataResult>;
+
+  /**
+   * Save protein intake to HealthKit
+   * @param options Nutrition save options including amount in grams and optional timestamp
+   */
+  saveProteinToHealthKit(options: NutritionSaveOptions): Promise<NutritionSaveResult>;
+
+  /**
+   * Save fat intake to HealthKit
+   * @param options Nutrition save options including amount in grams and optional timestamp
+   */
+  saveFatToHealthKit(options: NutritionSaveOptions): Promise<NutritionSaveResult>;
+
+  /**
+   * Save carbohydrates intake to HealthKit
+   * @param options Nutrition save options including amount in grams and optional timestamp
+   */
+  saveCarbohydratesToHealthKit(options: NutritionSaveOptions): Promise<NutritionSaveResult>;
 }
 
 // Native module interface
diff --git a/utils/notificationHelpers.ts b/utils/notificationHelpers.ts
index 9adc7be..5b1ecc1 100644
--- a/utils/notificationHelpers.ts
+++ b/utils/notificationHelpers.ts
@@ -187,49 +187,6 @@ export class NutritionNotificationHelpers {
     }
   }
 
-  /**
-   * 发送午餐记录提醒
-   */
-  static async sendLunchReminder(userName: string) {
-    const coachUrl = buildCoachDeepLink({
-      action: 'diet',
-      subAction: 'card',
-      meal: 'lunch'
-    });
-
-    return notificationService.sendImmediateNotification({
-      title: '午餐记录提醒',
-      body: `${userName}，记得记录今天的午餐情况哦！`,
-      data: {
-        type: 'lunch_reminder',
-        meal: '午餐',
-        url: coachUrl
-      },
-      sound: true,
-      priority: 'normal',
-    });
-  }
-
-  /**
-   * 取消午餐提醒
-   */
-  static async cancelLunchReminder(): Promise<void> {
-    try {
-      const notifications = await notificationService.getAllScheduledNotifications();
-
-      for (const notification of notifications) {
-        if (notification.content.data?.type === 'lunch_reminder' &&
-          notification.content.data?.isDailyReminder === true) {
-          await notificationService.cancelNotification(notification.identifier);
-          console.log('已取消午餐提醒:', notification.identifier);
-        }
-      }
-    } catch (error) {
-      console.error('取消午餐提醒失败:', error);
-      throw error;
-    }
-  }
-
   /**
    * 安排每日晚餐提醒
    * @param userName 用户名