diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
index 69f72fedd..0c7d73c80 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs
@@ -86,9 +86,9 @@ namespace OrmTest
             db.Insertable(new ABMapping1() {  AId=1,BId=1 }).ExecuteCommand();
             db.Insertable(new ABMapping1() { AId =2, BId = 1 }).ExecuteCommand();
             db.Insertable(new ABMapping1() { AId = 2, BId = 2 }).ExecuteCommand();
-
+            var p = "";
             var list3= db.Queryable<A1>()
-                .Includes(x => x.BList.Where(it=>it.Id==1).ToList())
+                .Includes(x => x.BList.WhereIF(!string.IsNullOrEmpty(p),it=>it.Id==11).ToList())
                 .Where(x=>x.BList.Any()).ToList();
 
             var list31 = db.Queryable<A1>().Includes(x => x.BList,x=>x.AList).ToList();
diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
index 6b89e191c..7c0b4ab3b 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
@@ -279,21 +279,30 @@ namespace SqlSugar
                     var exp = method.Arguments[1];
                     where.Add(" " +queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString());
                 }
+                if (method.Method.Name == "WhereIF")
+                {
+                    var isOk = LambdaExpression.Lambda(method.Arguments[1]).Compile().DynamicInvoke();
+                    if (isOk.ObjToBool())
+                    {
+                        var exp = method.Arguments[2];
+                        where.Add(" " + queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString());
+                    }
+                }
                 else if (method.Method.Name == "OrderBy")
                 {
                     var exp = method.Arguments[1];
-                    oredrBy.Add( " "+ queryable.QueryBuilder.GetExpressionValue(exp,ResolveExpressType.WhereSingle).GetString());
+                    oredrBy.Add(" " + queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString());
                 }
                 else if (method.Method.Name == "OrderByDescending")
                 {
                     var exp = method.Arguments[1];
-                    oredrBy.Add(" " + queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString()+" DESC");
+                    oredrBy.Add(" " + queryable.QueryBuilder.GetExpressionValue(exp, ResolveExpressType.WhereSingle).GetString() + " DESC");
                 }
                 else if (method.Method.Name == "ToList")
                 {
                     isList = true;
                 }
-                else 
+                else
                 {
                     Check.ExceptionEasy($"no support {item}", $"不支持表达式{item} 不支持方法{method.Method.Name}");
                 }
diff --git a/Src/Asp.Net/SqlSugar/SqlSugar.csproj b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
index dac86fb7e..76c71d046 100644
--- a/Src/Asp.Net/SqlSugar/SqlSugar.csproj
+++ b/Src/Asp.Net/SqlSugar/SqlSugar.csproj
@@ -254,6 +254,7 @@
     <Compile Include="SqlSugarClient.cs" />
     <Compile Include="Utilities\CallContext.cs" />
     <Compile Include="Utilities\CallContextAsync.cs" />
+    <Compile Include="Utilities\CommonExtensions.cs" />
     <Compile Include="Utilities\PropertyCallAdapterProvider.cs" />
     <Compile Include="Utilities\SugarRetry.cs" />
     <Compile Include="Utilities\DataTableExtensions.cs" />
diff --git a/Src/Asp.Net/SqlSugar/Utilities/CommonExtensions.cs b/Src/Asp.Net/SqlSugar/Utilities/CommonExtensions.cs
new file mode 100644
index 000000000..086658cc6
--- /dev/null
+++ b/Src/Asp.Net/SqlSugar/Utilities/CommonExtensions.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SqlSugar 
+{
+    public static class CommonExtensions
+    {
+        public static IEnumerable<T> WhereIF<T>(this IEnumerable<T> thisValue, bool isOk, Func<T, bool> predicate) 
+        {
+            if (isOk)
+            {
+                return thisValue.Where(predicate);
+            }
+            else 
+            {
+                return thisValue;
+            }
+        }
+    }
+}