diff --git a/src/pages/back/backNum.vue b/src/pages/back/backNum.vue
index a53b9ca..2f491a9 100644
--- a/src/pages/back/backNum.vue
+++ b/src/pages/back/backNum.vue
@@ -288,6 +288,7 @@ const submitNum = () => {
         "backApplyInfo":taskInfo.value,
         "backApplyDetailsList":typeList.value
     }
+    if (param.backApplyInfo.signUrl) delete param.backApplyInfo.signUrl
     insertApp(obj).then(res => { 
         console.log(res)
         if(res.code==200){