diff --git a/src/family/services/messageService.ts b/src/family/services/messageService.ts
new file mode 100644
index 0000000..995db31
--- /dev/null
+++ b/src/family/services/messageService.ts
@@ -0,0 +1,375 @@
+/**
+ * 家属端留言服务
+ * 负责与后端API交互，管理留言的创建、查询和删除
+ */
+
+const API_BASE_URL = 'http://localhost:8000/api';
+
+export interface FamilyMessage {
+  id: number;
+  family_id: string;
+  content: string;
+  sender_name: string;
+  sender_relation: string;
+  scheduled_time: string;
+  played: boolean;
+  played_at?: string;
+  liked: boolean;
+  is_active: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface CreateMessageData {
+  family_id: string;
+  content: string;
+  sender_name: string;
+  sender_relation: string;
+  scheduled_time: string;
+}
+
+/**
+ * 获取家庭所有留言
+ */
+export async function getFamilyMessages(familyId: string): Promise<FamilyMessage[]> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/messages?family_id=${familyId}`
+    );
+
+    if (!response.ok) {
+      throw new Error(`获取留言失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.messages || [];
+  } catch (error) {
+    console.error('获取留言错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 创建新留言
+ */
+export async function createMessage(messageData: CreateMessageData): Promise<number> {
+  try {
+    const response = await fetch(`${API_BASE_URL}/family/messages`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(messageData),
+    });
+
+    if (!response.ok) {
+      const errorData = await response.json();
+      throw new Error(errorData.error || `创建留言失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.message_id;
+  } catch (error) {
+    console.error('创建留言错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 删除留言
+ */
+export async function deleteMessage(messageId: number): Promise<boolean> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/messages/${messageId}`,
+      {
+        method: 'DELETE',
+      }
+    );
+
+    if (!response.ok) {
+      throw new Error(`删除留言失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.success;
+  } catch (error) {
+    console.error('删除留言错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 格式化日期时间为本地格式
+ */
+export function formatDateTime(dateTimeStr: string): string {
+  try {
+    const date = new Date(dateTimeStr);
+    const now = new Date();
+    const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+    const yesterday = new Date(today);
+    yesterday.setDate(yesterday.getDate() - 1);
+    const messageDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
+
+    const timeStr = `${String(date.getHours()).padStart(2, '0')}:${String(date.getMinutes()).padStart(2, '0')}`;
+
+    if (messageDate.getTime() === today.getTime()) {
+      return `今天 ${timeStr}`;
+    } else if (messageDate.getTime() === yesterday.getTime()) {
+      return `昨天 ${timeStr}`;
+    } else {
+      return `${date.getMonth() + 1}/${date.getDate()} ${timeStr}`;
+    }
+  } catch {
+    return dateTimeStr;
+  }
+}
+
+// ==================== 家属端消息/告警 API ====================
+
+export interface FamilyAlert {
+  id: number;
+  family_id: string;
+  elderly_id?: number;
+  elderly_name?: string;
+  alert_type: 'sos_emergency' | 'contact_family' | 'medication' | 'emotion' | 'inactive' | 'emergency';
+  level: 'low' | 'medium' | 'high';
+  title?: string;
+  message: string;
+  metadata?: any;
+  source: 'elderly' | 'system' | 'family';
+  handled: boolean;
+  handled_at?: string;
+  handled_by?: number;
+  handler_name?: string;
+  reply_message?: string;
+  read: boolean;
+  read_at?: string;
+  is_active: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface CreateAlertData {
+  family_id: string;
+  alert_type: FamilyAlert['alert_type'];
+  level: FamilyAlert['level'];
+  message: string;
+}
+
+/**
+ * 获取家庭所有消息/告警
+ */
+export async function getFamilyAlerts(
+  familyId: string,
+  options?: {
+    handled?: boolean;
+    read?: boolean;
+    level?: string;
+    alert_type?: string;
+    elderly_id?: number;
+    limit?: number;
+    offset?: number;
+  }
+): Promise<{ alerts: FamilyAlert[]; total: number }> {
+  try {
+    const params = new URLSearchParams({ family_id: familyId });
+
+    if (options) {
+      if (options.handled !== undefined) params.append('handled', options.handled.toString());
+      if (options.read !== undefined) params.append('read', options.read.toString());
+      if (options.level) params.append('level', options.level);
+      if (options.alert_type) params.append('alert_type', options.alert_type);
+      if (options.elderly_id) params.append('elderly_id', options.elderly_id.toString());
+      if (options.limit) params.append('limit', options.limit.toString());
+      if (options.offset) params.append('offset', options.offset.toString());
+    }
+
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts?${params.toString()}`
+    );
+
+    if (!response.ok) {
+      throw new Error(`获取消息失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return {
+      alerts: data.alerts || [],
+      total: data.total || 0
+    };
+  } catch (error) {
+    console.error('获取消息错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 创建新消息/告警（通常由老人端触发）
+ */
+export async function createAlert(alertData: CreateAlertData): Promise<number> {
+  try {
+    const response = await fetch(`${API_BASE_URL}/family/alerts`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(alertData),
+    });
+
+    if (!response.ok) {
+      const errorData = await response.json();
+      throw new Error(errorData.error || `创建消息失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.alert_id;
+  } catch (error) {
+    console.error('创建消息错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 标记消息为已读
+ */
+export async function markAlertAsRead(alertId: number): Promise<boolean> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts/${alertId}/read`,
+      {
+        method: 'POST',
+      }
+    );
+
+    if (!response.ok) {
+      throw new Error(`标记已读失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.success;
+  } catch (error) {
+    console.error('标记已读错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 标记消息/告警为已处理（带回复）
+ */
+export async function handleAlert(
+  alertId: number,
+  handledBy?: number,
+  replyMessage?: string
+): Promise<boolean> {
+  try {
+    const body: any = {};
+    if (handledBy) body.handled_by = handledBy;
+    if (replyMessage) body.reply_message = replyMessage;
+
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts/${alertId}/handle`,
+      {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(body),
+      }
+    );
+
+    if (!response.ok) {
+      throw new Error(`处理消息失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.success;
+  } catch (error) {
+    console.error('处理消息错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 回复消息给老人
+ */
+export async function replyAlert(
+  alertId: number,
+  replyMessage: string
+): Promise<boolean> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts/${alertId}/reply`,
+      {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ reply_message: replyMessage }),
+      }
+    );
+
+    if (!response.ok) {
+      throw new Error(`回复消息失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.success;
+  } catch (error) {
+    console.error('回复消息错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 删除消息/告警
+ */
+export async function deleteAlert(alertId: number): Promise<boolean> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts/${alertId}`,
+      {
+        method: 'DELETE',
+      }
+    );
+
+    if (!response.ok) {
+      throw new Error(`删除消息失败: ${response.statusText}`);
+    }
+
+    const data = await response.json();
+    return data.success;
+  } catch (error) {
+    console.error('删除消息错误:', error);
+    throw error;
+  }
+}
+
+/**
+ * 获取消息统计
+ */
+export async function getAlertStats(familyId: string): Promise<{
+  today_count: number;
+  status_stats: {
+    unread: number;
+    unhandled: number;
+    handled: number;
+  };
+  level_stats: Record<string, number>;
+  type_stats: Record<string, number>;
+}> {
+  try {
+    const response = await fetch(
+      `${API_BASE_URL}/family/alerts/stats?family_id=${familyId}`
+    );
+
+    if (!response.ok) {
+      throw new Error(`获取统计失败: ${response.statusText}`);
+    }
+
+    return await response.json();
+  } catch (error) {
+    console.error('获取消息统计错误:', error);
+    throw error;
+  }
+}