diff --git a/server/src/db/init.ts b/server/src/db/init.ts
index c7f00ee..f761298 100644
--- a/server/src/db/init.ts
+++ b/server/src/db/init.ts
@@ -187,12 +187,21 @@ async function runMigrations(conn: mysql.Connection) {
     // 插入默认配置
     await conn.query(`
       INSERT IGNORE INTO sys_config (config_key, config_value) VALUES
+      ('app_name', '小菜记账'),
       ('app_version', '1.0.0'),
       ('app_slogan', '温暖 x 轻松的个人记账小程序'),
       ('app_description', '让记账从负担变成享受')
     `)
   }
 
+  // 确保 app_name 配置存在（兼容已有数据库）
+  const [appNameRows] = await conn.query(
+    "SELECT COUNT(*) as cnt FROM sys_config WHERE config_key = 'app_name'"
+  )
+  if ((appNameRows as any[])[0].cnt === 0) {
+    await conn.query("INSERT INTO sys_config (config_key, config_value) VALUES ('app_name', '小菜记账')")
+  }
+
   // 反馈表
   const hasFeedbacks = await tableExists(conn, 'feedbacks')
   if (!hasFeedbacks) {
diff --git a/server/src/db/seed.sql b/server/src/db/seed.sql
index 9071259..10ac8ef 100644
--- a/server/src/db/seed.sql
+++ b/server/src/db/seed.sql
@@ -18,6 +18,7 @@ INSERT IGNORE INTO categories (user_id, name, icon, color, type, sort_order) VAL
 
 -- 系统配置
 INSERT IGNORE INTO sys_config (config_key, config_value) VALUES
+('app_name', '小菜记账'),
 ('app_version', '1.0.0'),
 ('app_slogan', '温暖 x 轻松的个人记账小程序'),
 ('app_description', '让记账从负担变成享受');