diff --git a/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs b/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
index d9aa3caa2..4b58e780a 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmExpressionContext.cs
@@ -186,7 +186,9 @@ namespace SqlSugar
         }
         public override string DateIsSameDay(MethodCallExpressionModel model)
         {
-            throw new NotSupportedException("Oracle NotSupportedException DateIsSameDay");
+            var parameter = model.Args[0];
+            var parameter2 = model.Args[1];
+            return string.Format(" ( cast({0} as date)= cast( {1} as date) ) ", parameter.MemberName, parameter2.MemberName); ;
         }
         public override string DateIsSameByType(MethodCallExpressionModel model)
         {