diff --git a/inventory-backend/app/models/transaction.py b/inventory-backend/app/models/transaction.py
index 2cc3bcb..d1cda8e 100644
--- a/inventory-backend/app/models/transaction.py
+++ b/inventory-backend/app/models/transaction.py
@@ -70,29 +70,71 @@ class TransBorrow(db.Model):
 class TransRepair(db.Model):
     __tablename__ = 'trans_repair'
 
-    id = db.Column(db.Integer, primary_key=True)
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+
+    # 维修单号 (新增)
+    repair_no = db.Column(db.String(50), nullable=True, unique=True)
+
+    # 关联基础信息 (新增)
+    base_id = db.Column(db.Integer, db.ForeignKey('material_base.id'), nullable=True)
+
+    # SKU 保留
     sku = db.Column(db.String(100))
+
+    # 序列号SN (新增，用于单台追溯)
+    serial_number = db.Column(db.String(100), nullable=True)
+
+    # 来源追溯 (兼容旧数据)
     source_table = db.Column(db.String(50))
     stock_id = db.Column(db.Integer)
-    arrival_date = db.Column(db.Date)
-    expected_repair_time = db.Column(db.String(100))
-    shipping_date = db.Column(db.Date)
     is_self_made = db.Column(db.Boolean, default=False)
     related_product_id = db.Column(db.Integer)
-    related_contract_id = db.Column(db.String(100))
-    repair_manager = db.Column(db.String(100))
+
+    # 入库/接收时间
+    arrival_date = db.Column(db.Date)
+
+    # 维修状态 (新增)
+    repair_status = db.Column(db.String(50), default='待检测')
+
+    # 客户反馈
     fault_description = db.Column(db.Text)
+
+    # 预计修复时间
+    expected_repair_time = db.Column(db.String(100))
+
+    # 维修日志/结果
     repair_result = db.Column(db.Text)
+
+    # 维修人
+    repair_manager = db.Column(db.String(100))
+
+    # 出库交付时间
+    shipping_date = db.Column(db.Date)
+
+    # 客户名/来源
+    related_contract_id = db.Column(db.String(100))
+
+    # 成本与售价
     cost_price = db.Column(db.Numeric(19, 4))
     sale_price = db.Column(db.Numeric(19, 4))
 
+    # 数据隔离 (新增)
+    company_id = db.Column(db.Integer, nullable=True)
+
+    # 关联关系
+    base = db.relationship('MaterialBase', backref='repairs')
+
     def to_dict(self):
         return {
             'id': self.id,
+            'repair_no': self.repair_no,
+            'base_id': self.base_id,
             'sku': self.sku,
+            'serial_number': self.serial_number,
             'source_table': self.source_table,
             'stock_id': self.stock_id,
             'arrival_date': self.arrival_date.strftime('%Y-%m-%d') if self.arrival_date else None,
+            'repair_status': self.repair_status,
             'expected_repair_time': self.expected_repair_time,
             'shipping_date': self.shipping_date.strftime('%Y-%m-%d') if self.shipping_date else None,
             'is_self_made': self.is_self_made,
@@ -103,6 +145,7 @@ class TransRepair(db.Model):
             'repair_result': self.repair_result,
             'cost_price': float(self.cost_price) if self.cost_price is not None else None,
             'sale_price': float(self.sale_price) if self.sale_price is not None else None,
+            'company_id': self.company_id,
         }