diff --git a/wrapper_db_client.go b/wrapper_db_client.go
index 6ea26d6..70298e1 100644
--- a/wrapper_db_client.go
+++ b/wrapper_db_client.go
@@ -133,6 +133,15 @@ func (dc *DBClient) GetDatabaseClient(conf *define.Driver, logInstance *zap.Logg
 		return nil, fmt.Errorf("%v : db driver is not support", conf.DBType)
 	}
 
+	dbInstance, _ := instance.DB()
+	if nil == conf.Connection {
+		conf.Connection = &define.Connection{
+			MaxOpen: 100,
+			MaxIdle: 100,
+		}
+	}
+	dbInstance.SetMaxIdleConns(conf.Connection.MaxIdle)
+	dbInstance.SetMaxOpenConns(conf.Connection.MaxOpen)
 	instance.Logger = wrapper.NewGormLoggerWithInstance(nil, instance, logInstance, "", nil)
 
 	return instance, nil