diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
index 764971cf3..d2d21d858 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
@@ -445,7 +445,7 @@ namespace SqlSugar
 
         private static bool IsSubMethod(MethodCallExpression express, string methodName)
         {
-            return SubTool.SubItems.Any(it => it.Name == methodName) && express.Object != null && express.Object.Type.Name == "Subqueryable`1";
+            return SubTools.SubItems.Any(it => it.Name == methodName) && express.Object != null && express.Object.Type.Name == "Subqueryable`1";
         }
         private void CheckMethod(MethodCallExpression expression)
         {
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubSelect.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubSelect.cs
index a6c402e3e..2b8d4471f 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubSelect.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubSelect.cs
@@ -33,7 +33,7 @@ namespace SqlSugar
         public string GetValue(ExpressionContext context, Expression expression = null)
         {
             var exp = expression as MethodCallExpression;
-            return SubTool.GetMethodValue(context, exp.Arguments[0],ResolveExpressType.FieldSingle);
+            return SubTools.GetMethodValue(context, exp.Arguments[0],ResolveExpressType.FieldSingle);
         }
     }
 }
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubWhere.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubWhere.cs
index c3de671ab..daca00a33 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubWhere.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/Items/SubWhere.cs
@@ -29,7 +29,7 @@ namespace SqlSugar.ExpressionsToSql.Subquery
         public string GetValue(ExpressionContext context, Expression expression)
         {
             var exp = expression as MethodCallExpression;
-            return "WHERE "+SubTool.GetMethodValue(context, exp.Arguments[0], ResolveExpressType.WhereMultiple);
+            return "WHERE "+SubTools.GetMethodValue(context, exp.Arguments[0], ResolveExpressType.WhereMultiple);
         }
     }
 }
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubResolve.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubResolve.cs
index 9c4b342b5..1f0057535 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubResolve.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubResolve.cs
@@ -36,7 +36,7 @@ namespace SqlSugar
             var isubList = this.allMethods.Select(exp =>
              {
                  var methodName = exp.Method.Name;
-                 var item = SubTool.SubItems.First(s => s.Name == methodName);
+                 var item = SubTools.SubItems.First(s => s.Name == methodName);
                  item.Expression = exp;
                  return item;
              })
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTool.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
similarity index 97%
rename from Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTool.cs
rename to Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
index c21e06b06..9fbd43339 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTool.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs
@@ -7,7 +7,7 @@ using System.Text;
 
 namespace SqlSugar
 {
-    public class SubTool
+    public class SubTools
     {
         public static List<ISubOperation> SubItems = new List<ISubOperation>()
         {
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index 2dd5ea5ee..3011f3fc6 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -80,7 +80,7 @@
     <Compile Include="ExpressionsToSql\Subquery\Subquerable.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubWhere.cs" />
     <Compile Include="ExpressionsToSql\Subquery\SubResolve.cs" />
-    <Compile Include="ExpressionsToSql\Subquery\SubTool.cs" />
+    <Compile Include="ExpressionsToSql\Subquery\SubTools.cs" />
     <Compile Include="Infrastructure\DependencyManagement.cs" />
     <Compile Include="Utilities\JsonHelper.cs" />
     <Compile Include="Utilities\ReflectionExtensions.cs" />