diff --git a/migrations/011_add_notifications.sql b/migrations/011_add_notifications.sql
new file mode 100644
index 0000000..e8ba897
--- /dev/null
+++ b/migrations/011_add_notifications.sql
@@ -0,0 +1,34 @@
+-- ============================================
+-- 迁移: 011_add_notifications.sql
+-- 目的: 创建统一通知表，覆盖系统公告/个人通知/事件通知
+-- 日期: 2026-05-26
+-- ============================================
+
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS notifications (
+    id         SERIAL PRIMARY KEY,
+    scope      VARCHAR(16) NOT NULL DEFAULT 'user',
+    user_id    INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    type       VARCHAR(32) NOT NULL,
+    title      VARCHAR(255) NOT NULL,
+    content    TEXT,
+    priority   VARCHAR(16) NOT NULL DEFAULT 'normal',
+    link       VARCHAR(512),
+    is_read    BOOLEAN NOT NULL DEFAULT false,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    expires_at TIMESTAMPTZ
+);
+
+CREATE INDEX IF NOT EXISTS idx_notifications_user
+    ON notifications(scope, user_id, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_notifications_all
+    ON notifications(scope, created_at DESC) WHERE scope = 'all';
+CREATE INDEX IF NOT EXISTS idx_notifications_expires
+    ON notifications(expires_at) WHERE expires_at IS NOT NULL;
+
+COMMENT ON TABLE notifications IS '统一通知表：scope=all 系统广播，scope=user 定向通知';
+COMMENT ON COLUMN notifications.scope IS '作用域: all(广播) / user(定向)';
+COMMENT ON COLUMN notifications.type IS '通知类型: system_maintenance / member_expiry / payment_success / version_update';
+
+COMMIT;
diff --git a/src/handlers/mod.rs b/src/handlers/mod.rs
index 85a8386..06b514c 100644
--- a/src/handlers/mod.rs
+++ b/src/handlers/mod.rs
@@ -4,6 +4,7 @@ pub mod auth;
 pub mod favorites;
 pub mod health;
 pub mod meta;
+pub mod notifications;
 pub mod payment;
 pub mod sentry;
 pub mod static_files;
@@ -29,6 +30,10 @@ pub use auth::web_login_auto_confirm;
 pub use favorites::{add_favorite, get_favorites, remove_favorite};
 pub use health::health_check;
 pub use meta::root;
+pub use notifications::{
+    list_notifications, mark_notification_read, mark_all_read, unread_count,
+    admin_create_notification, admin_delete_notification,
+};
 pub use static_files::serve_static_files;
 pub use user::get_current_user_profile;
 pub use user::save_user_profile;
diff --git a/src/handlers/notifications.rs b/src/handlers/notifications.rs
new file mode 100644
index 0000000..2990201
--- /dev/null
+++ b/src/handlers/notifications.rs
@@ -0,0 +1,214 @@
+// handlers/notifications.rs — 通知系统处理器
+use actix_web::{web, get, put, post, delete, HttpResponse};
+use serde::Deserialize;
+use sqlx::postgres::PgPool;
+use chrono::Utc;
+
+use crate::db;
+use crate::error::AppError;
+use crate::models::Claims;
+
+// ===== 查询参数 =====
+
+#[derive(Debug, Deserialize)]
+pub struct NotificationListQuery {
+    page: Option<i32>,
+    limit: Option<i32>,
+}
+
+// ===== 创建通知请求 =====
+
+#[derive(Debug, Deserialize)]
+pub struct CreateNotificationRequest {
+    pub scope: String,         // "all" 或 "user"
+    pub user_id: Option<i32>,  // scope="user" 时必填
+    pub type_: String,
+    pub title: String,
+    pub content: Option<String>,
+    pub priority: Option<String>,
+    pub link: Option<String>,
+}
+
+// ===== 用户接口 =====
+
+/// GET /api/notifications — 获取当前用户的通知列表
+#[get("/api/notifications")]
+pub async fn list_notifications(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+    query: web::Query<NotificationListQuery>,
+) -> Result<HttpResponse, AppError> {
+    let user_id = claims.user_id;
+    let page = query.page.unwrap_or(1).max(1);
+    let limit = query.limit.unwrap_or(20).clamp(1, 100);
+    let offset = (page - 1) * limit;
+
+    let rows = sqlx::query_as::<_, crate::models::Notification>(
+        r#"
+        SELECT id, scope, user_id, type AS type_, title, content, priority, link,
+               is_read, created_at, expires_at
+        FROM notifications
+        WHERE scope = 'all' OR (scope = 'user' AND user_id = $1)
+        ORDER BY created_at DESC
+        LIMIT $2 OFFSET $3
+        "#,
+    )
+    .bind(user_id)
+    .bind(limit)
+    .bind(offset)
+    .fetch_all(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("查询通知失败: {}", e)))?;
+
+    let total: i64 = sqlx::query_scalar(
+        r#"SELECT COUNT(*) FROM notifications WHERE scope = 'all' OR (scope = 'user' AND user_id = $1)"#,
+    )
+    .bind(user_id)
+    .fetch_one(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("统计通知失败: {}", e)))?;
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({
+        "success": true,
+        "data": {
+            "list": rows,
+            "total": total,
+            "page": page,
+            "limit": limit,
+        }
+    })))
+}
+
+/// PUT /api/notifications/{id}/read — 标记单条已读
+#[put("/api/notifications/{id}/read")]
+pub async fn mark_notification_read(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+    path: web::Path<i32>,
+) -> Result<HttpResponse, AppError> {
+    let notif_id = path.into_inner();
+    let user_id = claims.user_id;
+
+    let affected = sqlx::query(
+        r#"UPDATE notifications SET is_read = true WHERE id = $1 AND (scope = 'all' OR user_id = $2)"#,
+    )
+    .bind(notif_id)
+    .bind(user_id)
+    .execute(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("标记已读失败: {}", e)))?
+    .rows_affected();
+
+    if affected == 0 {
+        return Err(AppError::NotFound("通知不存在".to_string()));
+    }
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({"success": true})))
+}
+
+/// PUT /api/notifications/read-all — 全部标记已读
+#[put("/api/notifications/read-all")]
+pub async fn mark_all_read(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+) -> Result<HttpResponse, AppError> {
+    let user_id = claims.user_id;
+
+    sqlx::query(
+        r#"UPDATE notifications SET is_read = true WHERE (scope = 'all' OR user_id = $1) AND is_read = false"#,
+    )
+    .bind(user_id)
+    .execute(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("全部标记已读失败: {}", e)))?;
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({"success": true})))
+}
+
+/// GET /api/notifications/unread-count — 未读通知数量
+#[get("/api/notifications/unread-count")]
+pub async fn unread_count(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+) -> Result<HttpResponse, AppError> {
+    let user_id = claims.user_id;
+
+    let count: i64 = sqlx::query_scalar(
+        r#"SELECT COUNT(*) FROM notifications WHERE (scope = 'all' OR user_id = $1) AND is_read = false"#,
+    )
+    .bind(user_id)
+    .fetch_one(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("查询未读数失败: {}", e)))?;
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({
+        "success": true,
+        "data": { "count": count }
+    })))
+}
+
+// ===== 管理员接口 =====
+
+/// POST /api/admin/notifications — 管理员创建通知
+#[post("/api/admin/notifications")]
+pub async fn admin_create_notification(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+    body: web::Json<CreateNotificationRequest>,
+) -> Result<HttpResponse, AppError> {
+    let admin_id = claims.user_id;
+
+    // 验证权限
+    let admin_user = db::get_user_by_id(pool.get_ref(), admin_id).await?;
+    if !admin_user.is_admin {
+        return Err(AppError::Forbidden("无权限".to_string()));
+    }
+
+    if body.scope != "all" && body.scope != "user" {
+        return Err(AppError::BadRequest("scope 必须是 all 或 user".to_string()));
+    }
+    if body.scope == "user" && body.user_id.is_none() {
+        return Err(AppError::BadRequest("scope=user 时必须指定 user_id".to_string()));
+    }
+
+    sqlx::query(
+        r#"
+        INSERT INTO notifications (scope, user_id, type, title, content, priority, link)
+        VALUES ($1, $2, $3, $4, $5, $6, $7)
+        "#,
+    )
+    .bind(&body.scope)
+    .bind(body.user_id)
+    .bind(&body.type_)
+    .bind(&body.title)
+    .bind(&body.content)
+    .bind(body.priority.as_deref().unwrap_or("normal"))
+    .bind(&body.link)
+    .execute(pool.get_ref())
+    .await
+    .map_err(|e| AppError::Database(format!("创建通知失败: {}", e)))?;
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({"success": true})))
+}
+
+/// DELETE /api/admin/notifications/{id} — 管理员删除通知
+#[delete("/api/admin/notifications/{id}")]
+pub async fn admin_delete_notification(
+    pool: web::Data<PgPool>,
+    claims: web::ReqData<Claims>,
+    path: web::Path<i32>,
+) -> Result<HttpResponse, AppError> {
+    let notif_id = path.into_inner();
+    let admin_user = db::get_user_by_id(pool.get_ref(), claims.user_id).await?;
+    if !admin_user.is_admin {
+        return Err(AppError::Forbidden("无权限".to_string()));
+    }
+
+    sqlx::query("DELETE FROM notifications WHERE id = $1")
+        .bind(notif_id)
+        .execute(pool.get_ref())
+        .await
+        .map_err(|e| AppError::Database(format!("删除通知失败: {}", e)))?;
+
+    Ok(HttpResponse::Ok().json(serde_json::json!({"success": true})))
+}
diff --git a/src/main.rs b/src/main.rs
index 6ac5e6c..1a3043e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -18,10 +18,11 @@ use auth::jwt_middleware;
 use config::AppConfig;
 use db::create_pool;
 use handlers::{
-    admin_force_confirm_order, admin_get_user, admin_refund_order, admin_update_user_payment, add_favorite, alipay_notify, alipay_pay_page, alipay_refund_notify, cancel_order,
+    admin_force_confirm_order, admin_get_user, admin_refund_order, admin_update_user_payment, add_favorite, alipay_notify,
+    admin_create_notification, admin_delete_notification, alipay_pay_page, alipay_refund_notify, cancel_order,
     create_order, delete_weather, generate_code, generate_temp_token_handler, get_current_user_profile,
     get_favorites, get_user_quota, get_weather_brief, get_weather_details,
-    get_user_orders, health_check, login, mock_login, mock_confirm, sync_order, payment_index, payment_login_status, payment_page, payment_success,
+    get_user_orders, health_check, list_notifications, login, mark_all_read, mark_notification_read, unread_count, mock_login, mock_confirm, sync_order, payment_index, payment_login_status, payment_page, payment_success,
     post_weather_data, report_frontend_error,
     refresh_token, remove_favorite, root, save_user_profile, serve_static_files,
     web_generate_login_code, web_login_confirm, web_login_auto_confirm,
@@ -109,6 +110,8 @@ fn create_server_config(
                 .service(admin_update_user_payment)
                 .service(admin_force_confirm_order)
                 .service(admin_refund_order)
+                .service(admin_create_notification)
+                .service(admin_delete_notification)
                 .service(create_order)
                 .service(mock_confirm)
                 .service(sync_order)
@@ -117,6 +120,10 @@ fn create_server_config(
                 .service(get_user_quota)
                 .service(get_favorites)
                 .service(add_favorite)
+                .service(list_notifications)
+                .service(mark_notification_read)
+                .service(mark_all_read)
+                .service(unread_count)
                 .service(remove_favorite)
         )
 }
diff --git a/src/models.rs b/src/models.rs
index e66fa84..c89ae4d 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -401,3 +401,21 @@ pub struct PaymentOrder {
     pub expires_at: Option<chrono::DateTime<chrono::Utc>>,
     pub created_at: chrono::DateTime<chrono::Utc>,
 }
+
+// ===== 通知系统 =====
+
+#[derive(Debug, Serialize, FromRow)]
+pub struct Notification {
+    pub id: i32,
+    pub scope: String,
+    pub user_id: Option<i32>,
+    #[sqlx(rename = "type")]
+    pub type_: String,
+    pub title: String,
+    pub content: Option<String>,
+    pub priority: String,
+    pub link: Option<String>,
+    pub is_read: bool,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    pub expires_at: Option<chrono::DateTime<chrono::Utc>>,
+}