diff --git a/wechat/pkg/bc/mq.go b/wechat/pkg/bc/mq.go
index a98c49e..b138423 100644
--- a/wechat/pkg/bc/mq.go
+++ b/wechat/pkg/bc/mq.go
@@ -1,6 +1,6 @@
 package bc
 
-const MQ_BC_EXCHANGE_NAME = "exchange.bc"
+const MQ_BC_EXCHANGE_NAME = "ext.wx.bc"
 const MQ_WX_TOC_BC_AUTH = "wx.bc.auth"
 const MQ_WX_TOC_BC_PAYMENT = "wx.bc.payment"
 const MQ_WX_TOC_BC_REFUND = "wx.bc.refund"