diff --git a/Merge/back_wzy/routes/comments.py b/Merge/back_wzy/routes/comments.py
new file mode 100644
index 0000000..2d5b654
--- /dev/null
+++ b/Merge/back_wzy/routes/comments.py
@@ -0,0 +1,46 @@
+# routes/comments.py
+from flask import Blueprint, request, jsonify, abort
+from extensions      import db
+from models.comment  import Comment
+from models.behavior import Behavior
+
+comments_bp = Blueprint('comments', __name__)
+
+@comments_bp.route('', methods=['POST'])
+def add_comment(post_id):
+    data = request.get_json() or {}
+    user_id = data.get('user_id')
+    content = data.get('content')
+    if not user_id or not content:
+        return jsonify({'error': 'user_id and content required'}), 400
+
+    comment = Comment(
+        post_id=post_id,
+        user_id=user_id,
+        content=content,
+        parent_id=data.get('parent_id')
+    )
+    db.session.add(comment)
+    # 记录行为
+    beh = Behavior(user_id=user_id, post_id=post_id, type='comment')
+    db.session.add(beh)
+    db.session.commit()
+    return jsonify({'id': comment.id}), 201
+
+@comments_bp.route('', methods=['GET'])
+def list_comments(post_id):
+    def serialize(c):
+        return {
+            'id': c.id,
+            'user_id': c.user_id,
+            'content': c.content,
+            'created_at': c.created_at.isoformat(),
+            'replies': [serialize(r) for r in c.replies]
+        }
+
+    comments = Comment.query.filter_by(
+        post_id=post_id,
+        status='active',
+        parent_id=None
+    ).order_by(Comment.created_at.asc()).all()
+    return jsonify([serialize(c) for c in comments])