diff --git a/src/db.rs b/src/db.rs
index ee51a3e..0f23366 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -389,6 +389,69 @@ pub async fn check_and_retry_pending_orders(pool: &PgPool) -> Result<u64, AppErr
     Ok(confirmed)
 }
 
+/// 检查会员到期前 7 天的用户，发送即将到期通知
+pub async fn check_member_expiry_soon(pool: &PgPool) -> Result<u64, AppError> {
+    let affected = sqlx::query(
+        r#"
+        INSERT INTO notifications (scope, user_id, type, title, content)
+        SELECT 'user', u.id, 'member_expiry_soon',
+               '会员即将到期',
+               CONCAT('您的会员将于 ', TO_CHAR(u.membership_expires_at, 'YYYY-MM-DD'), ' 到期，请及时续费')
+        FROM users u
+        WHERE u.is_member = true
+          AND u.membership_expires_at IS NOT NULL
+          AND u.membership_expires_at > NOW()
+          AND u.membership_expires_at <= NOW() + INTERVAL '7 days'
+          AND NOT EXISTS (
+              SELECT 1 FROM notifications n
+              WHERE n.user_id = u.id
+                AND n.type = 'member_expiry_soon'
+                AND n.created_at > NOW() - INTERVAL '1 day'
+          )
+        "#,
+    )
+    .execute(pool)
+    .await
+    .map_err(|e| AppError::Database(format!("检查会员到期失败: {}", e)))?
+    .rows_affected();
+
+    if affected > 0 {
+        tracing::info!("已发送 {} 条会员到期提醒", affected);
+    }
+    Ok(affected)
+}
+
+/// 检查已过期的会员，发送过期通知
+pub async fn check_member_expired(pool: &PgPool) -> Result<u64, AppError> {
+    let affected = sqlx::query(
+        r#"
+        INSERT INTO notifications (scope, user_id, type, title, content)
+        SELECT 'user', u.id, 'member_expired',
+               '会员已过期',
+               '您的会员已过期，续费后可恢复无限存储额度'
+        FROM users u
+        WHERE u.is_member = true
+          AND u.membership_expires_at IS NOT NULL
+          AND u.membership_expires_at < NOW()
+          AND NOT EXISTS (
+              SELECT 1 FROM notifications n
+              WHERE n.user_id = u.id
+                AND n.type = 'member_expired'
+                AND n.created_at > NOW() - INTERVAL '1 day'
+          )
+        "#,
+    )
+    .execute(pool)
+    .await
+    .map_err(|e| AppError::Database(format!("检查会员过期失败: {}", e)))?
+    .rows_affected();
+
+    if affected > 0 {
+        tracing::info!("已发送 {} 条会员过期通知", affected);
+    }
+    Ok(affected)
+}
+
 /// 清理超过 24 小时仍未支付的待处理订单
 pub async fn cleanup_expired_pending_orders(pool: &PgPool, user_id: Option<i32>) -> Result<u64, AppError> {
     let affected = if let Some(uid) = user_id {
@@ -476,6 +539,50 @@ pub async fn cleanup_expired_login_codes(pool: &PgPool) -> Result<u64, AppError>
 /// 确认订单支付（模拟）：更新订单状态 + 激活用户付费（累加有效期）
 ///
 /// 返回计算后的到期时间（永久会员返回 None）
+/// 插入支付成功通知
+async fn insert_payment_notification(pool: &PgPool, user_id: i32, order_no: &str) -> Result<(), AppError> {
+    // 查出套餐信息
+    let pkg_info: Option<(String, String)> = sqlx::query_as(
+        r#"SELECT package_type, status FROM payment_orders WHERE order_no = $1"#,
+    )
+    .bind(order_no)
+    .fetch_optional(pool)
+    .await
+    .map_err(|e| AppError::Database(format!("查询订单失败: {}", e)))?;
+
+    let (pkg_type, status) = match pkg_info {
+        Some(info) => info,
+        None => return Ok(()),
+    };
+
+    if status != "paid" {
+        return Ok(());
+    }
+
+    let pkg_label = match pkg_type.as_str() {
+        "monthly" => "包月会员",
+        "yearly" => "包年会员",
+        "permanent" => "永久会员",
+        _ => "会员",
+    };
+
+    let title = format!("{}开通成功", pkg_label);
+    let content = format!("恭喜！您已成功开通{}", pkg_label);
+
+    sqlx::query(
+        r#"INSERT INTO notifications (scope, user_id, type, title, content)
+           VALUES ('user', $1, 'payment_success', $2, $3)"#,
+    )
+    .bind(user_id)
+    .bind(&title)
+    .bind(&content)
+    .execute(pool)
+    .await
+    .ok();
+
+    Ok(())
+}
+
 pub async fn confirm_payment_order(
     pool: &PgPool,
     order_no: &str,
@@ -532,6 +639,9 @@ pub async fn confirm_payment_order(
     .await
     .map_err(|e| AppError::Database(format!("支付确认失败: {}", e)))?;
 
+    // 发送支付成功通知
+    let _ = insert_payment_notification(pool, user_id, order_no).await;
+
     Ok(new_expires)
 }
 
@@ -598,6 +708,8 @@ pub async fn confirm_payment_order_by_orderno(
     // 审计日志
     if let Some(uid) = user_id {
         let _ = insert_payment_audit_log(pool, order_no, uid, "paid", None, None).await;
+        // 发送支付成功通知
+        let _ = insert_payment_notification(pool, uid, order_no).await;
     }
 
     Ok(())
diff --git a/src/main.rs b/src/main.rs
index 1a3043e..6a048f1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -267,6 +267,10 @@ async fn main() -> std::io::Result<()> {
                 }
                 Err(e) => tracing::warn!("[定时任务] 扫描待支付订单失败: {}", e),
             }
+
+            // 会员到期提醒
+            let _ = db::check_member_expiry_soon(&pool_clone).await;
+            let _ = db::check_member_expired(&pool_clone).await;
         }
     });