diff --git a/AssetManager.Data/DatabaseExtensions.cs b/AssetManager.Data/DatabaseExtensions.cs
index e7e9784..3a0cf3c 100755
--- a/AssetManager.Data/DatabaseExtensions.cs
+++ b/AssetManager.Data/DatabaseExtensions.cs
@@ -8,9 +8,9 @@ public static class DatabaseExtensions
 {
     public static IServiceCollection AddDatabase(this IServiceCollection services)
     {
-        // 使用 Scoped 注册，每个 HTTP 请求一个实例，避免并发冲突
-        // SqlSugarScope 内部会自动管理连接池
-        services.AddScoped<ISqlSugarClient>(s =>
+        // 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 =>
         {
             return SqlSugarConfig.GetSqlSugarClient();
         });
diff --git a/AssetManager.Data/SqlSugarConfig.cs b/AssetManager.Data/SqlSugarConfig.cs
index 55244c1..319c56e 100755
--- a/AssetManager.Data/SqlSugarConfig.cs
+++ b/AssetManager.Data/SqlSugarConfig.cs
@@ -27,6 +27,31 @@ public static class SqlSugarConfig
             ?? _configuration.GetConnectionString("Default")
             ?? throw new InvalidOperationException("Connection string 'Default' not found in environment variables or configuration.");
 
+        // MySQL 连接池优化配置
+        // 添加连接池参数提高稳定性
+        if (!connectionString.Contains("Pooling=", StringComparison.OrdinalIgnoreCase))
+        {
+            connectionString += ";Pooling=true";
+        }
+        if (!connectionString.Contains("MaximumPoolSize=", StringComparison.OrdinalIgnoreCase))
+        {
+            connectionString += ";MaximumPoolSize=100";
+        }
+        if (!connectionString.Contains("MinimumPoolSize=", StringComparison.OrdinalIgnoreCase))
+        {
+            connectionString += ";MinimumPoolSize=5";
+        }
+        // 连接超时和生命周期
+        if (!connectionString.Contains("ConnectionTimeout=", StringComparison.OrdinalIgnoreCase))
+        {
+            connectionString += ";ConnectionTimeout=30";
+        }
+        // 连接空闲超时，避免使用长时间空闲的连接
+        if (!connectionString.Contains("ConnectionIdleTimeout=", StringComparison.OrdinalIgnoreCase))
+        {
+            connectionString += ";ConnectionIdleTimeout=180";
+        }
+
         return new SqlSugarScope(new ConnectionConfig()
         {
             ConnectionString = connectionString,