diff --git a/Src/Asp.NetCore2/SqlSugar/Infrastructure/InstanceFactory.cs b/Src/Asp.NetCore2/SqlSugar/Infrastructure/InstanceFactory.cs
index e995a0a6e..a9236cd6d 100644
--- a/Src/Asp.NetCore2/SqlSugar/Infrastructure/InstanceFactory.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Infrastructure/InstanceFactory.cs
@@ -670,17 +670,32 @@ namespace SqlSugar
             }
             return type;
         }
-
         internal static Type GetCustomTypeByClass<T>(string className)
         {
-            var key = "Assembly_" + CustomDllName + assembly.GetHashCode();
+            Type type = null;
+            foreach (var item in CustomDlls.AsEnumerable())
+            {
+                if (type == null)
+                {
+                    type = GetCustomTypeByClass<T>(className, item);
+                }
+                if (type != null)
+                {
+                    break;
+                }
+            }
+            return type;
+        }
+        internal static Type GetCustomTypeByClass<T>(string className,string customDllName)
+        {
+            var key = "Assembly_" + customDllName + assembly.GetHashCode();
             var newAssembly = new ReflectionInoCacheService().GetOrCreate<Assembly>(key, () => {
                 try
                 {
                     var path = Assembly.GetExecutingAssembly().Location;
                     if (path.HasValue())
                     {
-                        path = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(path), CustomDllName + ".dll");
+                        path = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(path), customDllName + ".dll");
                     }
                     if (path.HasValue() && FileHelper.IsExistFile(path))
                     {