diff --git a/Merge/back_wzy/models/topic.py b/Merge/back_wzy/models/topic.py
new file mode 100644
index 0000000..d0e5a2e
--- /dev/null
+++ b/Merge/back_wzy/models/topic.py
@@ -0,0 +1,14 @@
+# models/topic.py
+from extensions import db
+from datetime import datetime
+
+class Topic(db.Model):
+    __tablename__ = 'topics'
+
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), unique=True, nullable=False)
+    description = db.Column(db.Text)
+    status = db.Column(db.Enum('active', 'archived'), default='active', nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
+
+    posts = db.relationship('Post', backref='topic', lazy='dynamic', cascade='all, delete')