diff --git a/.vscode/settings.json b/.vscode/settings.json
index 3f836a2..48c4e33 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,4 @@
 {
-    "kiroAgent.configureMCP": "Enabled"
+    "kiroAgent.configureMCP": "Enabled",
+    "codingcopilot.enableCompletionLanguage": {}
 }
\ No newline at end of file
diff --git a/src/medications/models/medication.model.ts b/src/medications/models/medication.model.ts
index b9223e5..a7e2ad7 100644
--- a/src/medications/models/medication.model.ts
+++ b/src/medications/models/medication.model.ts
@@ -162,6 +162,30 @@ export class Medication extends Model {
   })
   declare deleted: boolean;
 
+  @Column({
+    type: DataType.BOOLEAN,
+    allowNull: false,
+    defaultValue: false,
+    comment: '是否已发送一个月过期预警',
+  })
+  declare expiryOneMonthWarned: boolean;
+
+  @Column({
+    type: DataType.BOOLEAN,
+    allowNull: false,
+    defaultValue: false,
+    comment: '是否已发送一周过期预警',
+  })
+  declare expiryOneWeekWarned: boolean;
+
+  @Column({
+    type: DataType.BOOLEAN,
+    allowNull: false,
+    defaultValue: false,
+    comment: '是否已发送一天过期预警',
+  })
+  declare expiryOneDayWarned: boolean;
+
   // 关联关系
   @HasMany(() => MedicationRecord, 'medicationId')
   declare records: MedicationRecord[];
diff --git a/src/medications/services/medication-reminder.service.ts b/src/medications/services/medication-reminder.service.ts
index aaca3a9..c729277 100644
--- a/src/medications/services/medication-reminder.service.ts
+++ b/src/medications/services/medication-reminder.service.ts
@@ -12,12 +12,16 @@ import * as dayjs from 'dayjs';
 /**
  * 药物提醒推送服务
  * 在服药时间前15分钟发送推送提醒，并在超过服药时间1小时后发送鼓励提醒
+ * 同时检查药品过期时间，分别在提前一个月、一周、一天进行预警
  */
 @Injectable()
 export class MedicationReminderService {
   private readonly logger = new Logger(MedicationReminderService.name);
-  private readonly REMINDER_MINUTES_BEFORE = 5; // 提前5分钟提醒
+  private readonly REMINDER_MINUTES_BEFORE = 2; // 提前5分钟提醒
   private readonly OVERDUE_HOURS_THRESHOLD = 1; // 超过1小时后发送超时提醒
+  private readonly EXPIRY_ONE_MONTH_DAYS = 30; // 提前一个月预警
+  private readonly EXPIRY_ONE_WEEK_DAYS = 7; // 提前一周预警
+  private readonly EXPIRY_ONE_DAY_DAYS = 1; // 提前一天预警
 
   constructor(
     @InjectModel(Medication)
@@ -408,4 +412,274 @@ export class MedicationReminderService {
 
     return count;
   }
+
+  /**
+   * 每天早上9点检查药品过期预警
+   * 分别在提前一个月、一周、一天进行预警
+   * 只有主进程（NODE_APP_INSTANCE=0）执行，避免多进程重复发送
+   */
+  @Cron('0 9 * * *')
+  async checkAndSendExpiryWarnings(): Promise<void> {
+    this.logger.log('开始检查药品过期预警');
+
+    try {
+      // 检查是否为主进程（NODE_APP_INSTANCE 为 0）
+      const nodeAppInstance = this.configService.get<number>('NODE_APP_INSTANCE', 0);
+      if (Number(nodeAppInstance) !== 0) {
+        this.logger.debug(`不是主进程 (instance: ${nodeAppInstance})，跳过药品过期预警检查`);
+        return;
+      }
+
+      this.logger.log('主进程检测到，执行药品过期预警检查...');
+
+      const now = dayjs();
+      const today = now.startOf('day');
+
+      // 计算各个预警时间点
+      const oneMonthLater = today.add(this.EXPIRY_ONE_MONTH_DAYS, 'day').toDate();
+      const oneWeekLater = today.add(this.EXPIRY_ONE_WEEK_DAYS, 'day').toDate();
+      const oneDayLater = today.add(this.EXPIRY_ONE_DAY_DAYS, 'day').toDate();
+
+      // 查找需要发送一个月预警的药品（过期时间在30天内，且未发送过一个月预警）
+      const oneMonthWarningMeds = await this.medicationModel.findAll({
+        where: {
+          isActive: true,
+          deleted: false,
+          expiryDate: {
+            [Op.not]: null,
+            [Op.lte]: oneMonthLater,
+            [Op.gt]: oneWeekLater, // 排除已经进入一周预警范围的
+          },
+          expiryOneMonthWarned: false,
+        },
+      });
+
+      // 查找需要发送一周预警的药品（过期时间在7天内，且未发送过一周预警）
+      const oneWeekWarningMeds = await this.medicationModel.findAll({
+        where: {
+          isActive: true,
+          deleted: false,
+          expiryDate: {
+            [Op.not]: null,
+            [Op.lte]: oneWeekLater,
+            [Op.gt]: oneDayLater, // 排除已经进入一天预警范围的
+          },
+          expiryOneWeekWarned: false,
+        },
+      });
+
+      // 查找需要发送一天预警的药品（过期时间在1天内，且未发送过一天预警）
+      const oneDayWarningMeds = await this.medicationModel.findAll({
+        where: {
+          isActive: true,
+          deleted: false,
+          expiryDate: {
+            [Op.not]: null,
+            [Op.lte]: oneDayLater,
+            [Op.gte]: today.toDate(), // 还未过期
+          },
+          expiryOneDayWarned: false,
+        },
+      });
+
+      // 查找已过期的药品（用于发送已过期提醒）
+      const expiredMeds = await this.medicationModel.findAll({
+        where: {
+          isActive: true,
+          deleted: false,
+          expiryDate: {
+            [Op.not]: null,
+            [Op.lt]: today.toDate(),
+          },
+          expiryOneDayWarned: false, // 复用一天预警标记
+        },
+      });
+
+      this.logger.log(
+        `找到需要预警的药品 - 一个月: ${oneMonthWarningMeds.length}, 一周: ${oneWeekWarningMeds.length}, 一天: ${oneDayWarningMeds.length}, 已过期: ${expiredMeds.length}`,
+      );
+
+      // 发送一个月预警
+      await this.sendExpiryWarnings(oneMonthWarningMeds, 'one_month');
+
+      // 发送一周预警
+      await this.sendExpiryWarnings(oneWeekWarningMeds, 'one_week');
+
+      // 发送一天预警
+      await this.sendExpiryWarnings(oneDayWarningMeds, 'one_day');
+
+      // 发送已过期提醒
+      await this.sendExpiryWarnings(expiredMeds, 'expired');
+
+      this.logger.log('药品过期预警检查完成');
+    } catch (error) {
+      this.logger.error('检查药品过期预警失败', error.stack);
+    }
+  }
+
+  /**
+   * 发送药品过期预警
+   */
+  private async sendExpiryWarnings(
+    medications: Medication[],
+    warningType: 'one_month' | 'one_week' | 'one_day' | 'expired',
+  ): Promise<void> {
+    if (medications.length === 0) {
+      return;
+    }
+
+    // 按用户分组
+    const userMedsMap = new Map<string, Medication[]>();
+    for (const med of medications) {
+      const userId = med.userId;
+      if (!userMedsMap.has(userId)) {
+        userMedsMap.set(userId, []);
+      }
+      userMedsMap.get(userId)!.push(med);
+    }
+
+    // 为每个用户发送预警
+    for (const [userId, meds] of userMedsMap.entries()) {
+      const success = await this.sendExpiryWarningToUser(userId, meds, warningType);
+      if (success) {
+        // 标记已发送预警
+        await this.markMedicationsAsExpiryWarned(
+          meds.map((m) => m.id),
+          warningType,
+        );
+      }
+    }
+  }
+
+  /**
+   * 为单个用户发送药品过期预警
+   */
+  private async sendExpiryWarningToUser(
+    userId: string,
+    medications: Medication[],
+    warningType: 'one_month' | 'one_week' | 'one_day' | 'expired',
+  ): Promise<boolean> {
+    try {
+      const medicationNames = medications.map((m) => m.name).join('、');
+
+      let title: string;
+      let body: string;
+
+      switch (warningType) {
+        case 'one_month':
+          title = '药品即将过期提醒';
+          body =
+            medications.length === 1
+              ? `您的药品「${medicationNames}」将在一个月内过期，请注意及时更换。`
+              : `您有 ${medications.length} 种药品将在一个月内过期：${medicationNames}，请注意及时更换。`;
+          break;
+        case 'one_week':
+          title = '药品过期预警';
+          body =
+            medications.length === 1
+              ? `您的药品「${medicationNames}」将在一周内过期，请尽快更换！`
+              : `您有 ${medications.length} 种药品将在一周内过期：${medicationNames}，请尽快更换！`;
+          break;
+        case 'one_day':
+          title = '药品过期紧急提醒';
+          body =
+            medications.length === 1
+              ? `您的药品「${medicationNames}」明天即将过期，请立即检查并更换！`
+              : `您有 ${medications.length} 种药品明天即将过期：${medicationNames}，请立即检查并更换！`;
+          break;
+        case 'expired':
+          title = '药品已过期警告';
+          body =
+            medications.length === 1
+              ? `您的药品「${medicationNames}」已过期，请勿继续服用，并及时更换新药！`
+              : `您有 ${medications.length} 种药品已过期：${medicationNames}，请勿继续服用，并及时更换新药！`;
+          break;
+      }
+
+      await this.pushService.sendNotification({
+        userIds: [userId],
+        title,
+        body,
+        payload: {
+          type: 'medication_expiry_warning',
+          warningType,
+          medicationIds: medications.map((m) => m.id),
+        },
+        sound: 'default',
+        badge: 1,
+      });
+
+      this.logger.log(`成功向用户 ${userId} 发送药品过期预警 (${warningType})`);
+      return true;
+    } catch (error) {
+      this.logger.error(
+        `向用户 ${userId} 发送药品过期预警失败`,
+        error.stack,
+      );
+      return false;
+    }
+  }
+
+  /**
+   * 标记药品已发送过期预警
+   */
+  private async markMedicationsAsExpiryWarned(
+    medicationIds: string[],
+    warningType: 'one_month' | 'one_week' | 'one_day' | 'expired',
+  ): Promise<void> {
+    try {
+      let updateField: string;
+      switch (warningType) {
+        case 'one_month':
+          updateField = 'expiryOneMonthWarned';
+          break;
+        case 'one_week':
+          updateField = 'expiryOneWeekWarned';
+          break;
+        case 'one_day':
+        case 'expired':
+          updateField = 'expiryOneDayWarned';
+          break;
+      }
+
+      await this.medicationModel.update(
+        { [updateField]: true },
+        {
+          where: {
+            id: {
+              [Op.in]: medicationIds,
+            },
+          },
+        },
+      );
+      this.logger.debug(
+        `已标记 ${medicationIds.length} 种药品为已发送 ${warningType} 过期预警`,
+      );
+    } catch (error) {
+      this.logger.error('标记药品过期预警失败', error.stack);
+    }
+  }
+
+  /**
+   * 重置药品的过期预警标记（当用户更新药品有效期时调用）
+   */
+  async resetExpiryWarnings(medicationId: string): Promise<void> {
+    try {
+      await this.medicationModel.update(
+        {
+          expiryOneMonthWarned: false,
+          expiryOneWeekWarned: false,
+          expiryOneDayWarned: false,
+        },
+        {
+          where: {
+            id: medicationId,
+          },
+        },
+      );
+      this.logger.log(`已重置药品 ${medicationId} 的过期预警标记`);
+    } catch (error) {
+      this.logger.error('重置药品过期预警标记失败', error.stack);
+    }
+  }
 }
\ No newline at end of file