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 e79f0ce75f..ce44a22455 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
@@ -62,6 +62,8 @@ namespace Volo.Abp.Application.Services
             ICrudAppService<TGetOutputDto, TGetListOutputDto, TKey, TGetListInput, TCreateInput, TUpdateInput>
         where TEntity : class, IEntity
     {
+        protected new IRepository<TEntity> Repository { get; }
+
         protected virtual string CreatePolicyName { get; set; }
 
         protected virtual string UpdatePolicyName { get; set; }
@@ -71,7 +73,7 @@ namespace Volo.Abp.Application.Services
         protected AbstractKeyCrudAppService(IRepository<TEntity> repository)
             : base(repository)
         {
-
+            Repository = repository;
         }
 
         public virtual async Task<TGetOutputDto> CreateAsync(TCreateInput input)
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 e6af5484a7..45dff23852 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
@@ -13,7 +13,7 @@ namespace Volo.Abp.Application.Services
         : AbstractKeyReadOnlyAppService<TEntity, TEntityDto, TEntityDto, TKey, PagedAndSortedResultRequestDto>
         where TEntity : class, IEntity
     {
-        protected AbstractKeyReadOnlyAppService(IRepository<TEntity> repository)
+        protected AbstractKeyReadOnlyAppService(IReadOnlyRepository<TEntity> repository)
             : base(repository)
         {
 
@@ -24,7 +24,7 @@ namespace Volo.Abp.Application.Services
         : AbstractKeyReadOnlyAppService<TEntity, TEntityDto, TEntityDto, TKey, TGetListInput>
         where TEntity : class, IEntity
     {
-        protected AbstractKeyReadOnlyAppService(IRepository<TEntity> repository)
+        protected AbstractKeyReadOnlyAppService(IReadOnlyRepository<TEntity> repository)
             : base(repository)
         {
 
@@ -36,13 +36,13 @@ namespace Volo.Abp.Application.Services
         , IReadOnlyAppService<TGetOutputDto, TGetListOutputDto, TKey, TGetListInput>
         where TEntity : class, IEntity
     {
-        protected IRepository<TEntity> Repository { get; }
+        protected IReadOnlyRepository<TEntity> Repository { get; }
 
         protected virtual string GetPolicyName { get; set; }
 
         protected virtual string GetListPolicyName { get; set; }
 
-        protected AbstractKeyReadOnlyAppService(IRepository<TEntity> repository)
+        protected AbstractKeyReadOnlyAppService(IReadOnlyRepository<TEntity> 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 0ddc4b4700..d99928126c 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
@@ -13,7 +13,7 @@ namespace Volo.Abp.Application.Services
         where TEntity : class, IEntity<TKey>
         where TEntityDto : IEntityDto<TKey>
     {
-        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository)
+        protected ReadOnlyAppService(IReadOnlyRepository<TEntity, TKey> repository)
             : base(repository)
         {
 
@@ -25,7 +25,7 @@ namespace Volo.Abp.Application.Services
         where TEntity : class, IEntity<TKey>
         where TEntityDto : IEntityDto<TKey>
     {
-        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository)
+        protected ReadOnlyAppService(IReadOnlyRepository<TEntity, TKey> repository)
             : base(repository)
         {
 
@@ -38,9 +38,9 @@ namespace Volo.Abp.Application.Services
         where TGetOutputDto : IEntityDto<TKey>
         where TGetListOutputDto : IEntityDto<TKey>
     {
-        protected new IRepository<TEntity, TKey> Repository { get; }
+        protected new IReadOnlyRepository<TEntity, TKey> Repository { get; }
 
-        protected ReadOnlyAppService(IRepository<TEntity, TKey> repository)
+        protected ReadOnlyAppService(IReadOnlyRepository<TEntity, TKey> repository)
         : base(repository)
         {
             Repository = repository;