diff --git a/ik3cloud/constant/constant.go b/ik3cloud/constant/constant.go
index 2069c18..dbe6a08 100644
--- a/ik3cloud/constant/constant.go
+++ b/ik3cloud/constant/constant.go
@@ -79,6 +79,7 @@ const (
 	PaymentTypePurchase PaymentType = "FKDLX09_SYS" // 采购付款单
 	PaymentTypeCost     PaymentType = "FKDLX10_SYS" // 费用付款单
 	PaymentTypeRequest  PaymentType = "FKDLX11_SYS" // 报销付款单
+	PaymentTypeTravel   PaymentType = "FKDLX12_SYS" // 差旅费
 )
 
 type PaymentPurpose = string