diff --git a/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAdminAppService_Tests.cs b/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAdminAppService_Tests.cs
new file mode 100644
index 0000000000..237434ef9f
--- /dev/null
+++ b/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAdminAppService_Tests.cs
@@ -0,0 +1,56 @@
+using Microsoft.Extensions.DependencyInjection;
+using NSubstitute;
+using Shouldly;
+using System;
+using System.Threading.Tasks;
+using Volo.Abp;
+using Volo.Abp.Clients;
+using Volo.Abp.Users;
+using Volo.Abp.Validation;
+using Volo.CmsKit.Admin.Tags;
+using Volo.CmsKit.Public.Tags;
+using Xunit;
+
+namespace Volo.CmsKit.Tags
+{
+    public class TagAdminAppService_Tests : CmsKitApplicationTestBase
+    {
+        private readonly ITagAdminAppService _tagAdminAppService;
+        private ICurrentUser _currentUser;
+        private readonly CmsKitTestData _cmsKitTestData;
+
+        public TagAdminAppService_Tests()
+        {
+            _tagAdminAppService = GetRequiredService<ITagAdminAppService>();
+            _cmsKitTestData = GetRequiredService<CmsKitTestData>();
+        }
+
+        protected override void AfterAddApplication(IServiceCollection services)
+        {
+            _currentUser = Substitute.For<ICurrentUser>();
+            services.AddSingleton(_currentUser);
+        }
+
+        [Fact]
+        public async Task ShouldCreateProperly()
+        {
+            var list = await _tagAdminAppService.CreateAsync(new TagCreateDto
+            {
+                EntityType = "any_new_type",
+                Name = "1",
+            });
+
+            list.Id.ShouldNotBe(Guid.Empty);
+        }
+
+        [Fact]
+        public async Task ShouldThrowException_WhenTagAlreadyExist()
+        {
+            await Should.ThrowAsync<BusinessException>(async () => await _tagAdminAppService.CreateAsync(new TagCreateDto
+            {
+                EntityType = _cmsKitTestData.Content_1_EntityType,
+                Name = _cmsKitTestData.Content_1_Tags[0],
+            }));
+        }
+    }
+}
diff --git a/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAppService_Tests.cs b/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagPublicAppService_Tests.cs
similarity index 95%
rename from modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAppService_Tests.cs
rename to modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagPublicAppService_Tests.cs
index 35b46b5a04..6ad1136167 100644
--- a/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagAppService_Tests.cs
+++ b/modules/cms-kit/test/Volo.CmsKit.Application.Tests/Tags/TagPublicAppService_Tests.cs
@@ -10,13 +10,13 @@ using Xunit;
 
 namespace Volo.CmsKit.Tags
 {
-    public class TagAppService_Tests : CmsKitApplicationTestBase
+    public class TagPublicAppService_Tests : CmsKitApplicationTestBase
     {
         private readonly ITagAppService _tagAppService;
         private ICurrentUser _currentUser;
         private readonly CmsKitTestData _cmsKitTestData;
 
-        public TagAppService_Tests()
+        public TagPublicAppService_Tests()
         {
             _tagAppService = GetRequiredService<ITagAppService>();
             _cmsKitTestData = GetRequiredService<CmsKitTestData>();