diff --git a/app/models/discuss.rb b/app/models/discuss.rb
index b7238dcd1..a236a2bbc 100644
--- a/app/models/discuss.rb
+++ b/app/models/discuss.rb
@@ -11,7 +11,7 @@ class Discuss < ApplicationRecord
   belongs_to :dis, polymorphic: true
 
   belongs_to :challenge, optional: true
-  validate_harmonious_of :content
+  validate :validate_sensitive_string
 
   after_create :send_tiding
 
@@ -71,4 +71,8 @@ class Discuss < ApplicationRecord
     }
     tidings.create!(base_attrs.merge(user_id: send_user_id))
   end
+
+  def validate_sensitive_string
+    raise("内容包含敏感词汇，请重新输入") unless HarmoniousDictionary.clean?(content)
+  end
 end