diff --git a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagCreateDto.cs b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagCreateDto.cs
index 3eb75bec07..6dd90d1362 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagCreateDto.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagCreateDto.cs
@@ -1,12 +1,17 @@
 using System.ComponentModel.DataAnnotations;
+using Volo.Abp.Validation;
+using Volo.CmsKit.Tags;
 
 namespace Volo.CmsKit.Admin.Tags
 {
     public class TagCreateDto
     {
         [Required]
+        [DynamicMaxLength(typeof(TagConsts), nameof(TagConsts.MaxEntityTypeLength))]
         public string EntityType { get; set; }
+
         [Required]
+        [DynamicMaxLength(typeof(TagConsts), nameof(TagConsts.MaxNameLength))]
         public string Name { get; set; }
     }
 }
diff --git a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagUpdateDto.cs b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagUpdateDto.cs
index 4df242a997..c4298b7730 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagUpdateDto.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Tags/TagUpdateDto.cs
@@ -1,10 +1,13 @@
 using System.ComponentModel.DataAnnotations;
+using Volo.Abp.Validation;
+using Volo.CmsKit.Tags;
 
 namespace Volo.CmsKit.Admin.Tags
 {
     public class TagUpdateDto
     {
         [Required]
+        [DynamicMaxLength(typeof(TagConsts), nameof(TagConsts.MaxNameLength))]
         public string Name { get; set; }
     }
 }