diff --git a/AssetManager.Data/DatabaseExtensions.cs b/AssetManager.Data/DatabaseExtensions.cs
index c8af1a3..fe2003b 100755
--- a/AssetManager.Data/DatabaseExtensions.cs
+++ b/AssetManager.Data/DatabaseExtensions.cs
@@ -8,11 +8,11 @@ public static class DatabaseExtensions
 {
     public static IServiceCollection AddDatabase(this IServiceCollection services)
     {
-        // SqlSugarScope 是线程安全的，内部使用 AsyncLocal 隔离上下文
-        // 使用 Singleton 注册，整个应用共享一个实例
-        services.AddSingleton<ISqlSugarClient>(s =>
+        // SqlSugarClient 超高性能模式：每次请求创建新实例
+        // Scoped 确保：同一 HTTP 请求内复用，不同请求隔离
+        services.AddScoped<ISqlSugarClient>(s =>
         {
-            return SqlSugarConfig.GetSqlSugarScope();
+            return SqlSugarConfig.GetSqlSugarClient();
         });
 
         services.AddScoped<DatabaseService>();
diff --git a/AssetManager.Data/SqlSugarConfig.cs b/AssetManager.Data/SqlSugarConfig.cs
index 2a54873..71bd345 100755
--- a/AssetManager.Data/SqlSugarConfig.cs
+++ b/AssetManager.Data/SqlSugarConfig.cs
@@ -16,7 +16,9 @@ public static class SqlSugarConfig
     }
 
     /// <summary>
-    /// 获取 SqlSugarClient 实例（用于后台任务，每次创建新实例）
+    /// 获取 SqlSugarClient 实例（超高性能模式）
+    /// 每次 new 创建实例，IsAutoCloseConnection=true 自动关闭连接
+    /// 适合：DI Scoped 注入、后台任务、Task.Run 场景
     /// </summary>
     public static ISqlSugarClient GetSqlSugarClient()
     {
@@ -27,44 +29,13 @@ public static class SqlSugarConfig
 
         var connectionString = GetConnectionString();
 
-        // 使用 SqlSugarClient（非 Scope），每次创建独立实例
-        // 适合后台任务、Task.Run 场景
+        // SqlSugarClient 超高性能模式
+        // 每次创建新实例，IsAutoCloseConnection=true 确保连接自动关闭
         return new SqlSugarClient(new ConnectionConfig()
         {
             ConnectionString = connectionString,
             DbType = DbType.MySql,
-            IsAutoCloseConnection = true,
-            InitKeyType = InitKeyType.Attribute,
-            ConfigureExternalServices = new ConfigureExternalServices
-            {
-                EntityService = (property, column) =>
-                {
-                    if (property.PropertyType == typeof(DateTime))
-                    {
-                        column.DataType = "datetime(3)";
-                    }
-                }
-            }
-        });
-    }
-
-    /// <summary>
-    /// 获取 SqlSugarScope 实例（用于 DI 注入，Singleton/Scoped）
-    /// </summary>
-    public static ISqlSugarClient GetSqlSugarScope()
-    {
-        if (_configuration == null)
-        {
-            throw new InvalidOperationException("SqlSugarConfig has not been initialized. Call Initialize() first.");
-        }
-
-        var connectionString = GetConnectionString();
-
-        return new SqlSugarScope(new ConnectionConfig()
-        {
-            ConnectionString = connectionString,
-            DbType = DbType.MySql,
-            IsAutoCloseConnection = true,
+            IsAutoCloseConnection = true,  // 必须为 true
             InitKeyType = InitKeyType.Attribute,
             ConfigureExternalServices = new ConfigureExternalServices
             {