diff --git a/app/models/lose_data.py b/app/models/lose_data.py
new file mode 100644
index 0000000..07ec485
--- /dev/null
+++ b/app/models/lose_data.py
@@ -0,0 +1,22 @@
+from sqlalchemy import Column, Integer, String, DateTime
+from ..core.database import Base
+
+class LoseData(Base):
+    __tablename__ = "lose_data"
+
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    account_id = Column(String(100), nullable=False, comment="水准线路编码", index=True)
+    NYID = Column(String(100), nullable=False, comment="期数id", index=True)
+    linecode = Column(String(100), nullable=False, comment="水准线路编码", index=True)
+    benchmarkids = Column(String(100), comment="工作基点名称序列")
+    point_id = Column(String(100), nullable=False, comment="观测点id", index=True)
+    section_id = Column(String(100), nullable=False, comment="所属断面id")
+    lose_data = Column(String(100), comment="水准观测类型")
+
+    # 模型转字典
+    def to_dict(self):
+        """将模型实例转换为字典，支持 Pydantic 序列化"""
+        return {
+            column.name: getattr(self, column.name)
+            for column in self.__table__.columns
+        }
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