diff --git a/src/views/secondDev/approveFlowPage.vue b/src/views/secondDev/approveFlowPage.vue
index bdf925d..352b4a6 100644
--- a/src/views/secondDev/approveFlowPage.vue
+++ b/src/views/secondDev/approveFlowPage.vue
@@ -339,7 +339,11 @@
 
     function getBackNode() {
         getDrawNode(processId.value).then(res => {
-            drawNode.value = res[0].activityId
+            if (res.length) {
+                drawNode.value = res[0].activityId
+            } else {
+                drawNode.value = ''
+            }
         })
     }