diff --git a/erp/expense.go b/erp/expense.go
index 89ee3f4..9ec3a32 100644
--- a/erp/expense.go
+++ b/erp/expense.go
@@ -197,6 +197,22 @@ func (r *expense) BatchChange(ctx context.Context, args ArgsExpenseChange) (err
 	return xClient.Call(ctx, "BatchChange", args, &reply)
 }
 
+type ArgsExpensePaymentAmountChange struct {
+	ExpenseId     int64           // 报销单id
+	PaymentAmount decimal.Decimal // 打款金额
+	CurrencyRate  decimal.Decimal // 汇率
+}
+
+// PaymentAmountChange @TITLE 打款金额修改
+func (r *expense) PaymentAmountChange(ctx context.Context, args ArgsExpensePaymentAmountChange) (err error) {
+	xClient, err := client.GetClient(r)
+	if err != nil {
+		return
+	}
+	reply := 0
+	return xClient.Call(ctx, "PaymentAmountChange", args, &reply)
+}
+
 // Ik3cloud @TITLE 同步
 func (r *expense) Ik3cloud(ctx context.Context, expenseId int64) (err error) {
 	xClient, err := client.GetClient(r)