diff --git a/Examples/base_entity/Program.cs b/Examples/base_entity/Program.cs
index d076fe36..7232a880 100644
--- a/Examples/base_entity/Program.cs
+++ b/Examples/base_entity/Program.cs
@@ -436,6 +436,46 @@ namespace base_entity
                 Math.PI
             });
 
+            var usergroupRepository = fsql.GetAggregateRootRepository<UserGroup>();
+            usergroupRepository.Delete(a => true);
+            usergroupRepository.Insert(new[]{
+                new UserGroup
+                {
+                    CreateTime = DateTime.Now,
+                    GroupName = "group1",
+                    UpdateTime = DateTime.Now,
+                    Sort = 1,
+                    User1s = new List<User1>
+                    {
+                        new User1 { Nickname = "nickname11", Username = "username11", Description = "desc11" },
+                        new User1 { Nickname = "nickname12", Username = "username12", Description = "desc12" },
+                        new User1 { Nickname = "nickname13", Username = "username13", Description = "desc13" },
+                    }
+                },
+                new UserGroup
+                {
+                    CreateTime = DateTime.Now,
+                    GroupName = "group2",
+                    UpdateTime = DateTime.Now,
+                    Sort = 2,
+                    User1s = new List<User1>
+                    {
+                        new User1 { Nickname = "nickname21", Username = "username21", Description = "desc21" },
+                        new User1 { Nickname = "nickname22", Username = "username22", Description = "desc22" },
+                        new User1 { Nickname = "nickname23", Username = "username23", Description = "desc23" },
+                    }
+                },
+            });
+            var userRepository = fsql.GetAggregateRootRepository<User1>();
+
+            var testsublist1 = fsql.Select<UserGroup>()
+                .First(a => new
+                {
+                    a.Id,
+                    list = userRepository.Select.Where(b => b.GroupId == a.Id).ToList(),
+                    list2 = userRepository.Select.Where(b => b.GroupId == a.Id).ToList(b => b.Nickname),
+                });
+
 
             Dictionary<string, object> dic = new Dictionary<string, object>();
             dic.Add("id", 1);
diff --git a/Examples/base_entity/base_entity.csproj b/Examples/base_entity/base_entity.csproj
index 2892934a..b29f9191 100644
--- a/Examples/base_entity/base_entity.csproj
+++ b/Examples/base_entity/base_entity.csproj
@@ -17,6 +17,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
+		<ProjectReference Include="..\..\Extensions\FreeSql.Extensions.AggregateRoot\FreeSql.Extensions.AggregateRoot.csproj" />
 		<ProjectReference Include="..\..\Extensions\FreeSql.Extensions.BaseEntity\FreeSql.Extensions.BaseEntity.csproj" />
 		<ProjectReference Include="..\..\Extensions\FreeSql.Extensions.JsonMap\FreeSql.Extensions.JsonMap.csproj" />
 		<ProjectReference Include="..\..\Extensions\FreeSql.Extensions.LazyLoading\FreeSql.Extensions.LazyLoading.csproj" />
diff --git a/FreeSql-lite.sln b/FreeSql-lite.sln
index a5b72d42..989e5166 100644
--- a/FreeSql-lite.sln
+++ b/FreeSql-lite.sln
@@ -81,6 +81,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FreeSql.Provider.OracleOled
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "aspnetcore_transaction", "Examples\aspnetcore_transaction\aspnetcore_transaction.csproj", "{28163C3B-B2E6-432D-AAC3-F5F19374BE31}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FreeSql.Extensions.AggregateRoot", "Extensions\FreeSql.Extensions.AggregateRoot\FreeSql.Extensions.AggregateRoot.csproj", "{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -439,6 +441,18 @@ Global
 		{28163C3B-B2E6-432D-AAC3-F5F19374BE31}.Release|x64.Build.0 = Release|Any CPU
 		{28163C3B-B2E6-432D-AAC3-F5F19374BE31}.Release|x86.ActiveCfg = Release|Any CPU
 		{28163C3B-B2E6-432D-AAC3-F5F19374BE31}.Release|x86.Build.0 = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|x64.Build.0 = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Debug|x86.Build.0 = Debug|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|x64.ActiveCfg = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|x64.Build.0 = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|x86.ActiveCfg = Release|Any CPU
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -469,10 +483,11 @@ Global
 		{9D82A683-2950-4E8A-B078-A422ECA6AAA5} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
 		{19D2E22A-B000-46B6-AFC8-60BF01A51C9A} = {2A381C57-2697-427B-9F10-55DA11FD02E4}
 		{28163C3B-B2E6-432D-AAC3-F5F19374BE31} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
+		{5C78C4CE-3CDC-49C3-AF34-556567B95F2A} = {4A92E8A6-9A6D-41A1-9CDA-DE10899648AA}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {089687FA-5D21-40AC-BA8A-AA0D1E1H7F98}
-		RESX_PrefixTranslations = True
 		RESX_NeutralResourcesLanguage = en-US
+		RESX_PrefixTranslations = True
+		SolutionGuid = {089687FA-5D21-40AC-BA8A-AA0D1E1H7F98}
 	EndGlobalSection
 EndGlobal
diff --git a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
index 35d5ddd0..ac981c63 100644
--- a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
+++ b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
@@ -22,8 +22,12 @@ public static partial class FreeSqlGlobalExtensions
 {
 #if net40
 #else
-    static readonly Lazy<PropertyInfo> _TaskReflectionResultPropertyLazy = new Lazy<PropertyInfo>(() => typeof(Task).GetProperty("Result"));
-    internal static object GetTaskReflectionResult(this Task task) => _TaskReflectionResultPropertyLazy.Value.GetValue(task, new object[0]);
+    internal static object GetTaskReflectionResult(this Task task)
+    {
+        var propResult = task?.GetType().GetProperty("Result");
+        if (propResult != null) return propResult.GetValue(task, new object[0]);
+        return null;
+    }
 #endif
 
     #region Type 对象扩展方法