diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
index 6e1c67829..eeb29e7f0 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
@@ -177,7 +177,10 @@ namespace SqlSugar
                 {
                     sqlParameter.DbType = System.Data.DbType.AnsiString;
                 }
-
+                if (parameter.CustomDbType != null && parameter.CustomDbType is SqlDbType)
+                {
+                    sqlParameter.SqlDbType = ((SqlDbType)parameter.CustomDbType);
+                }
                 ++index;
             }
             return result;