diff --git a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyCrudAppService.cs b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyCrudAppService.cs
index 9f234fbc3a..e79f0ce75f 100644
--- a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyCrudAppService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyCrudAppService.cs
@@ -1,10 +1,6 @@
 using System;
-using System.Linq;
-using System.Linq.Dynamic.Core;
 using System.Threading.Tasks;
-
 using Volo.Abp.Application.Dtos;
-using Volo.Abp.Auditing;
 using Volo.Abp.Domain.Entities;
 using Volo.Abp.Domain.Repositories;
 using Volo.Abp.MultiTenancy;
diff --git a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyReadOnlyAppService.cs b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyReadOnlyAppService.cs
index c6a971cf5d..e6af5484a7 100644
--- a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyReadOnlyAppService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/AbstractKeyReadOnlyAppService.cs
@@ -1,10 +1,7 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Dynamic.Core;
-using System.Text;
 using System.Threading.Tasks;
-
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Auditing;
 using Volo.Abp.Domain.Entities;
@@ -19,6 +16,7 @@ namespace Volo.Abp.Application.Services
         protected AbstractKeyReadOnlyAppService(IRepository<TEntity> repository)
             : base(repository)
         {
+
         }
     }
 
@@ -29,6 +27,7 @@ namespace Volo.Abp.Application.Services
         protected AbstractKeyReadOnlyAppService(IRepository<TEntity> repository)
             : base(repository)
         {
+
         }
     }
 
diff --git a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/CrudAppService.cs b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/CrudAppService.cs
index a2af0592a4..7832e8a4ab 100644
--- a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/CrudAppService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/CrudAppService.cs
@@ -70,7 +70,7 @@ namespace Volo.Abp.Application.Services
         protected new IRepository<TEntity, TKey> Repository { get; }
 
         protected CrudAppService(IRepository<TEntity, TKey> repository)
-        : base(repository)
+            : base(repository)
         {
             Repository = repository;
         }
diff --git a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ReadOnlyAppService.cs b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ReadOnlyAppService.cs
index 69f1fd5077..0ddc4b4700 100644
--- a/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ReadOnlyAppService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application/Volo/Abp/Application/Services/ReadOnlyAppService.cs
@@ -1,9 +1,6 @@
 using System;
-using System.Collections.Generic;
 using System.Linq;
-using System.Text;
 using System.Threading.Tasks;
-
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Auditing;
 using Volo.Abp.Domain.Entities;
@@ -16,8 +13,10 @@ namespace Volo.Abp.Application.Services
         where TEntity : class, IEntity<TKey>
         where TEntityDto : IEntityDto<TKey>
     {
-        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository) : base(repository)
+        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository)
+            : base(repository)
         {
+
         }
     }
 
@@ -26,8 +25,10 @@ namespace Volo.Abp.Application.Services
         where TEntity : class, IEntity<TKey>
         where TEntityDto : IEntityDto<TKey>
     {
-        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository) : base(repository)
+        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository)
+            : base(repository)
         {
+
         }
     }