diff --git a/Merge/back_trm/app/models/post.py b/Merge/back_trm/app/models/post.py
new file mode 100644
index 0000000..041e263
--- /dev/null
+++ b/Merge/back_trm/app/models/post.py
@@ -0,0 +1,111 @@
+from .users import User
+from . import Base
+
+from sqlalchemy import (
+    Column, Integer, String, Text, JSON, Enum,
+    TIMESTAMP, ForeignKey, Index, func, text
+)
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import relationship
+
+
+class Post(Base):
+    __tablename__ = 'posts'
+    __table_args__ = (
+        # 索引
+        Index('idx_posts_heat', 'heat'),
+        # MySQL 引擎、字符集、校对规则、表注释
+        {
+            'mysql_engine': 'InnoDB',
+            'mysql_charset': 'utf8mb4',
+            'mysql_collate': 'utf8mb4_general_ci',
+            'comment': '内容帖子表'
+        }
+    )
+
+    def to_dict(self):
+        return {
+            'id': self.id if self.id else None,
+            'user_id': self.user_id if self.user_id else None,
+            'topic_id': self.topic_id if self.topic_id else None,
+            'type': self.type if self.type else None,
+            'title': self.title if self.title else None,
+            'content': self.content if self.content else None,
+            'media_urls': self.media_urls if self.media_urls else None,
+            'status': self.status if self.status else None,
+            'heat': self.heat if self.heat else None,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+            'updated_at': self.updated_at.isoformat() if self.updated_at else None
+        }
+
+
+    id = Column(
+        Integer,
+        primary_key=True,
+        autoincrement=True,
+        comment='帖子ID'
+    )
+    user_id = Column(
+        Integer,
+        ForeignKey('users.id', ondelete='CASCADE'),
+        nullable=False,
+        index=True,
+        comment='作者ID'
+    )
+    topic_id = Column(
+        Integer,
+        ForeignKey('topics.id', ondelete='SET NULL'),
+        nullable=True,
+        index=True,
+        comment='所属话题ID'
+    )
+    type = Column(
+        Enum('text', 'image', 'video', 'document', name='post_type'),
+        nullable=False,
+        server_default=text("'text'"),
+        comment='内容类型'
+    )
+    title = Column(
+        String(255),
+        nullable=False,
+        comment='标题'
+    )
+    content = Column(
+        Text,
+        nullable=False,
+        comment='正文内容'
+    )
+    media_urls = Column(
+        JSON,
+        nullable=True,
+        comment='媒体资源URL数组'
+    )
+    status = Column(
+        Enum('draft', 'pending', 'published', 'deleted', 'rejected', name='post_status'),
+        nullable=False,
+        server_default=text("'draft'"),
+        comment='状态'
+    )
+    heat = Column(
+        Integer,
+        nullable=False,
+        server_default=text('0'),
+        comment='热度值'
+    )
+    created_at = Column(
+        TIMESTAMP,
+        nullable=True,
+        server_default=func.current_timestamp(),
+        comment='创建时间'
+    )
+    updated_at = Column(
+        TIMESTAMP,
+        nullable=True,
+        server_default=func.current_timestamp(),
+        onupdate=func.current_timestamp(),
+        comment='更新时间'
+    )
+
+    # 可选：与 User/Topic 模型的关系（需要在 User、Topic 中也定义 back_populates）
+    # user = relationship('User', back_populates='posts')
+    # topic = relationship('Topic', back_populates='posts')