diff --git a/Src/Asp.Net/OracleTest/UnitTest/ExpressionTest/Method.cs b/Src/Asp.Net/OracleTest/UnitTest/ExpressionTest/Method.cs
index a20dd5a0e..ca1a060ae 100644
--- a/Src/Asp.Net/OracleTest/UnitTest/ExpressionTest/Method.cs
+++ b/Src/Asp.Net/OracleTest/UnitTest/ExpressionTest/Method.cs
@@ -265,7 +265,7 @@ namespace OrmTest.UnitTest
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(:MethodConst0 AS DATETIME) = :Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(to_date(:MethodConst0,'yyyy-mm-dd hh24:mi:ss') = :Const1 )", new List<SugarParameter>() {
                 new SugarParameter(":MethodConst0","2015-1-1"),new SugarParameter(":Const1",x2)
             }, "ToDate error");
         }
@@ -277,7 +277,7 @@ namespace OrmTest.UnitTest
             expContext.Resolve(exp, ResolveExpressType.WhereSingle);
             var value = expContext.Result.GetString();
             var pars = expContext.Parameters;
-            base.Check(value, pars, "(CAST(:MethodConst0 AS DATE) = :Const1 )", new List<SugarParameter>() {
+            base.Check(value, pars, "(to_date(:MethodConst0,'yyyy-mm-dd hh24:mi:ss') = :Const1 )", new List<SugarParameter>() {
                 new SugarParameter(":MethodConst0","2015-1-1"),new SugarParameter(":Const1",x2)
             }, "ExtendDate error");
         }
diff --git a/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs b/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
index 5471ca72b..06e9506fc 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
@@ -40,6 +40,21 @@ namespace SqlSugar
     }
     public partial class OracleMethod : DefaultDbMethod, IDbMethods
     {
+        public override string DateAddByType(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter2 = model.Args[1];
+            var parameter3 = model.Args[2];
+            return string.Format(" (DATEADD({2},{1},{0})) ", parameter.MemberName, parameter2.MemberName, parameter3.MemberValue);
+        }
+
+        public override string DateAddDay(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter2 = model.Args[1];
+            return string.Format(" (DATEADD(day,{1},{0})) ", parameter.MemberName, parameter2.MemberName);
+        }
+
         public override string ToString(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
@@ -49,7 +64,7 @@ namespace SqlSugar
         public override string ToDate(MethodCallExpressionModel model)
         {
             var parameter = model.Args[0];
-            return string.Format(" CAST({0} AS DATE)", parameter.MemberName);
+            return string.Format(" to_date({0},'yyyy-mm-dd hh24:mi:ss')", parameter.MemberName);
         }
         public override string Contains(MethodCallExpressionModel model)
         {