diff --git a/app/model/ReimburseModel.py b/app/model/ReimburseModel.py
index 870a38e..758726f 100644
--- a/app/model/ReimburseModel.py
+++ b/app/model/ReimburseModel.py
@@ -1,3 +1,5 @@
+import decimal
+from decimal import Decimal
 from typing import Optional, List
 
 from pydantic import computed_field
@@ -80,6 +82,20 @@ class ReimburseModel(BasicModel, table=True):
   def other_list(self, value: Optional[List["ReimburseOtherModel"]]) -> None:
     pass
 
+  @computed_field
+  @property
+  def amount(self) -> Decimal:
+    ret = Decimal(0)
+    for other_item in (self.other_list or []):
+      ret = ret + Decimal(other_item.amount)
+    for travel_item in (self.travel_list or []):
+      ret = ret + Decimal(travel_item.amount)
+    return ret
+
+  @amount.setter
+  def amount(self, value: decimal) -> None:
+    pass
+
 
 ReimburseService = create_model_service(
   Cls=ReimburseModel,