diff --git a/misc/wx/agent.js b/misc/wx/agent.js
index 36da385d..d565b954 100644
--- a/misc/wx/agent.js
+++ b/misc/wx/agent.js
@@ -24,9 +24,13 @@ Volcanos(chat.ONIMPORT, {
 					previewImage: function(can, url, list) {
 						wx.previewImage({current: url, urls: list||[url]})
 					},
-					scanQRCode: function(can, cb) { wx.scanQRCode({needResult: cb? 1: 0, scanType: ["qrCode", "barCode"], success: function (res) {
-						can.base.isFunc(cb) && cb(can.base.ParseJSON(res.resultStr))
-					} }) },
+					scanQRCode: function(can, cb) {
+						wx.scanQRCode({needResult: cb? 1: 0, scanType: ["qrCode", "barCode"], success: function (res) {
+							can.base.isFunc(cb) && cb(can.base.ParseJSON(res.resultStr))
+						}, fail: function(res) {
+							can.user.toastFailure(can, res)
+						} })
+					},
 				}, function(key, value) { return can.user.agent[key] = value, key }).concat([
 					"updateAppMessageShareData",
 				], can.user.isMobile? ["updateTimelineShareData"]: []), openTagList: ["wx-open-subscribe"],