diff --git a/back/main.py b/back/main.py
index 1bf017c..5df142f 100644
--- a/back/main.py
+++ b/back/main.py
@@ -65,6 +65,11 @@ class Comment(db.Model):
     downvotes = db.Column(db.Integer, default=0)
     parent_comment_id = db.Column(db.Integer, db.ForeignKey('comments.id'), nullable=True)
 
+class DenyWord(db.Model):
+    __tablename__ = 'deny_words'
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    word = db.Column(db.String(255), unique=True, nullable=False)
+
 # 初始化数据库函数
 def init_db():
     if not os.path.exists('./data'):
@@ -180,6 +185,12 @@ def submit_post():
 
         identity_token = data.get('identity')
         
+        # 违禁词检测
+        deny_words = DenyWord.query.all()
+        for dw in deny_words:
+            if dw.word in content:
+                return jsonify({"code": 2005, "data": "提交内容包含违禁词"})
+
         # Identity 验证
         if identity_token:
             if not Identity.query.filter_by(token=identity_token).first():