diff --git a/base/util/util.go b/base/util/util.go
index 36eb55e..af3fa8c 100644
--- a/base/util/util.go
+++ b/base/util/util.go
@@ -15,3 +15,11 @@ func RandomStr(length int) string {
 	}
 	return string(result)
 }
+
+func CutTail(str string, length int) string {
+	if len(str) <= length {
+		return str
+	}
+
+	return str[0:length]
+}
diff --git a/base/util/util_test.go b/base/util/util_test.go
new file mode 100644
index 0000000..fd4a1b5
--- /dev/null
+++ b/base/util/util_test.go
@@ -0,0 +1,11 @@
+package util
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestCutTail(t *testing.T) {
+	fmt.Println(CutTail("jiangyong", 4))
+	fmt.Println(CutTail("jiangyong", 41))
+}
diff --git a/common/weixin/qypay.go b/common/weixin/qypay.go
index e093f51..23ca132 100644
--- a/common/weixin/qypay.go
+++ b/common/weixin/qypay.go
@@ -133,7 +133,7 @@ func (p *QyPay) PayRedMoney(req *RedMoneyReq) error {
 		return err
 	}
 	if req.BillNo == "" {
-		req.BillNo = fmt.Sprintf("QY%s%s", time.Now().Format("20060102150405"), butil.RandomStr(6))
+		req.BillNo = fmt.Sprintf("QY%s%s", time.Now().Format("20060102150405"), butil.CutTail(req.Userid, 12))
 	}
 	param.Set("nonce_str", butil.RandomStr(32))
 	param.Set("mch_billno", req.BillNo)
diff --git a/server/service/qyweixin_approve.go b/server/service/qyweixin_approve.go
index 6f25188..3d2b9bc 100644
--- a/server/service/qyweixin_approve.go
+++ b/server/service/qyweixin_approve.go
@@ -1,6 +1,7 @@
 package service
 
 import (
+	butil "enterprise/base/util"
 	"enterprise/base/wechat/message"
 	"enterprise/common/config"
 	"enterprise/common/dao"
@@ -126,7 +127,7 @@ func (a *Approve) handleRefund(spNo string) {
 
 	// 支付费用
 	var req weixin.RedMoneyReq
-	req.BillNo = fmt.Sprintf("BX%s", refund.SpNo)
+	req.BillNo = fmt.Sprintf("BX%s%s", refund.SpNo, butil.CutTail(refund.Username, 12))
 	req.Title = fmt.Sprintf("【%s】报销", refund.RefundType)
 	req.Userid = refund.Username
 	req.TotalAmount = int64(100 * refund.RefundAmount)
diff --git a/worker/autopay.go b/worker/autopay.go
index fcd901e..6f0d41a 100644
--- a/worker/autopay.go
+++ b/worker/autopay.go
@@ -113,7 +113,7 @@ func autoPayMoney(checkin *model.Checkin, checkinType string, payMoney int64) er
 	req.TotalAmount = payMoney
 	req.Title = checkinType
 
-	req.BillNo = fmt.Sprintf("DK%s%s", time.Now().Format("20060102150405"), butil.RandomStr(6))
+	req.BillNo = fmt.Sprintf("DK%s%s", time.Now().Format("20060102150405"), butil.CutTail(checkin.Username, 12))
 	req.Userid = checkin.Username
 	if err := weixin.NewQyPay().PayRedMoney(&req); err != nil {
 		log.Errorf("pay red money error :%s", err.Error())