diff --git a/app/models/page_theme.rb b/app/models/page_theme.rb
index d4fa18327..bce3d5f70 100644
--- a/app/models/page_theme.rb
+++ b/app/models/page_theme.rb
@@ -14,8 +14,7 @@
 
 class PageTheme < ApplicationRecord
     enum language_frame: { hugo: 0, jeklly: 1, hexo: 2}
-    validates :name, presence: {message: "主题名不能为空"}, uniqueness: {message: "主题名已存在",scope: :language_frame}
-
+    validates :name, presence: {message: "主题名不能为空"}, uniqueness: {message: "主题名已存在",scope: :language_frame},length: {maximum: 255}
 
   def image
     page_image_url('image')
diff --git a/app/views/admins/page_themes/_form_modal.html.erb b/app/views/admins/page_themes/_form_modal.html.erb
index afe6144ca..3d0a97588 100644
--- a/app/views/admins/page_themes/_form_modal.html.erb
+++ b/app/views/admins/page_themes/_form_modal.html.erb
@@ -22,7 +22,7 @@
             <label>
               主题名 <span class="ml10 color-orange mr20">*</span>
             </label>
-            <%= p.text_field :name,class: "form-control input-lg",required: true%>
+            <%= p.text_field :name, class: "form-control input-lg",required: true, maxlength: 100, size: 100 %>
           </div>
           <div class="form-group">
             <label>