diff --git a/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs b/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
index 226881671..4da93291a 100644
--- a/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
+++ b/Src/Asp.Net/MySqlTest/UnitTest/ExpressionTest/Method.cs
@@ -356,7 +356,7 @@ namespace OrmTest.UnitTest
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(TIMESTAMPDIFF(day,@MethodConst0,@MethodConst1)=0) ", new List<SugarParameter>() {
+            base.Check(value, pars, " (TIMESTAMPDIFF(day,date(@MethodConst0),date(@MethodConst1))=0) ", new List<SugarParameter>() {
                 new SugarParameter("@MethodConst0",x2),new SugarParameter("@MethodConst1",x2)
             }, "DateIsSameDay error");
         }
diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
index 7b79c616a..7e1d6a3ff 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlExpressionContext.cs
@@ -46,7 +46,7 @@ namespace SqlSugar
         {
             var parameter = model.Args[0];
             var parameter2 = model.Args[1];
-            return string.Format(" (TIMESTAMPDIFF(day,{0},{1})=0) ", parameter.MemberName, parameter2.MemberName); ;
+            return string.Format(" (TIMESTAMPDIFF(day,date({0}),date({1}))=0) ", parameter.MemberName, parameter2.MemberName); ;
         }
 
         public override string DateIsSameByType(MethodCallExpressionModel model)