diff --git a/business/model/dao/print_bill.go b/business/model/dao/print_bill.go
index c68d74ca6..825da327a 100644
--- a/business/model/dao/print_bill.go
+++ b/business/model/dao/print_bill.go
@@ -16,6 +16,7 @@ func DeductionPrintBalance(db *DaoDB, printNo string) error {
 		return errors.New("数据异常")
 	}
 
+	data.PrintBalance -= 1
 	_, err := UpdateEntity(db, data, "print_balance")
 	return err
 }