diff --git a/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
index f372793d4..38f3ccfb4 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
@@ -135,28 +135,7 @@ namespace SqlSugar
             this.Context.CurrentConnectionConfig.IsAutoCloseConnection = false;
             this.Open();
             return result;
-        }
-        public async Task CloseAsync()
-        {
-            if (this.Transaction != null)
-            {
-                this.Transaction = null;
-            }
-            if (this.Connection != null && this.Connection.State == ConnectionState.Open)
-            {
-                await ((DbConnection)this.Connection).CloseAsync();
-            }
-            if (this.IsMasterSlaveSeparation && this.SlaveConnections.HasValue())
-            {
-                foreach (var slaveConnection in this.SlaveConnections)
-                {
-                    if (slaveConnection != null && slaveConnection.State == ConnectionState.Open)
-                    {
-                       await ((DbConnection)slaveConnection).CloseAsync();
-                    }
-                }
-            }
-        }
+        } 
         public virtual void Close()
         {
             if (this.Transaction != null)