diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/CmsKitErrorCodes.cs b/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/CmsKitErrorCodes.cs
index 4b57a5a52e..59b78259fb 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/CmsKitErrorCodes.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/CmsKitErrorCodes.cs
@@ -4,5 +4,6 @@
     {
         public const string TagAlreadyExist = "CmsKit:0001";
         public const string ContentAlreadyExist = "CmsKit:0002";
+        public const string EntityNotTaggable = "CmsKit:0003";
     }
 }
diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/DefaultTagDefinitionStore.cs b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/DefaultTagDefinitionStore.cs
index b851c9af9c..5b30ab08b9 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/DefaultTagDefinitionStore.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/DefaultTagDefinitionStore.cs
@@ -29,5 +29,10 @@ namespace Volo.CmsKit.Tags
         {
             return Task.FromResult(options.Tags.Values.ToList());
         }
+
+        public Task<bool> IsDefinedAsync([NotNull] string entityType)
+        {
+            return Task.FromResult(options.Tags.ContainsKey(entityType));
+        }
     }
 }
diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/EntityNotTaggableException.cs b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/EntityNotTaggableException.cs
new file mode 100644
index 0000000000..1987bef869
--- /dev/null
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/EntityNotTaggableException.cs
@@ -0,0 +1,19 @@
+using System;
+using Volo.Abp;
+
+namespace Volo.CmsKit.Tags
+{
+    [Serializable]
+    public class EntityNotTaggableException : BusinessException
+    {
+        public EntityNotTaggableException(string code = null, string message = null, string details = null, Exception innerException = null, Microsoft.Extensions.Logging.LogLevel logLevel = Microsoft.Extensions.Logging.LogLevel.Warning) : base(code, message, details, innerException, logLevel)
+        {
+        }
+
+        public EntityNotTaggableException(string entityType) 
+        {
+            Code = CmsKitErrorCodes.EntityNotTaggable;
+            WithData(nameof(Tag.EntityType), entityType);
+        }
+    }
+}
diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/ITagDefinitionStore.cs b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/ITagDefinitionStore.cs
index 9fa06f92d4..033c6e6a5f 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/ITagDefinitionStore.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/ITagDefinitionStore.cs
@@ -9,5 +9,7 @@ namespace Volo.CmsKit.Tags
         Task<List<TagDefiniton>> GetTagDefinitionsAsync();
 
         Task<TagDefiniton> GetTagDefinitionOrNullAsync([NotNull] string entityType);
+
+        Task<bool> IsDefinedAsync([NotNull] string entityType);
     }
 }
diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/TagManager.cs b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/TagManager.cs
index 0c2cbd63ed..5318336502 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/TagManager.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain/Volo/CmsKit/Tags/TagManager.cs
@@ -51,6 +51,11 @@ namespace Volo.CmsKit.Tags
                 throw new TagAlreadyExistException(entityType, name);
             }
 
+            if (!await _tagDefinitionStore.IsDefinedAsync(entityType))
+            {
+                throw new EntityNotTaggableException(entityType); 
+            }
+
             return await _tagRepository.InsertAsync(
                 new Tag(
                     id,