diff --git a/ui/src/workflow/nodes/application-node/index.vue b/ui/src/workflow/nodes/application-node/index.vue
index e700826f4..4fc9fba54 100644
--- a/ui/src/workflow/nodes/application-node/index.vue
+++ b/ui/src/workflow/nodes/application-node/index.vue
@@ -238,49 +238,42 @@ const update_field = () => {
         const new_user_input_field_list = cloneDeep(
           ok.data.work_flow.nodes[0].properties.user_input_field_list
         )
-        const merge_api_input_field_list =
-          new_api_input_field_list ||
-          [].map((item: any) => {
-            const find_field = old_api_input_field_list.find(
-              (old_item: any) => old_item.variable == item.variable
-            )
-            if (find_field) {
-              return {
-                ...item,
-                value: find_field.value,
-                label:
-                  typeof item.label === 'object' && item.label != null
-                    ? item.label.label
-                    : item.label
-              }
-            } else {
-              return item
+
+        const merge_api_input_field_list = (new_api_input_field_list || []).map((item: any) => {
+          const find_field = old_api_input_field_list.find(
+            (old_item: any) => old_item.variable == item.variable
+          )
+          if (find_field) {
+            return {
+              ...item,
+              value: find_field.value,
+              label:
+                typeof item.label === 'object' && item.label != null ? item.label.label : item.label
             }
-          })
+          } else {
+            return item
+          }
+        })
         set(
           props.nodeModel.properties.node_data,
           'api_input_field_list',
           merge_api_input_field_list
         )
-        const merge_user_input_field_list =
-          new_user_input_field_list ||
-          [].map((item: any) => {
-            const find_field = old_user_input_field_list.find(
-              (old_item: any) => old_item.field == item.field
-            )
-            if (find_field) {
-              return {
-                ...item,
-                value: find_field.value,
-                label:
-                  typeof item.label === 'object' && item.label != null
-                    ? item.label.label
-                    : item.label
-              }
-            } else {
-              return item
+        const merge_user_input_field_list = (new_user_input_field_list || []).map((item: any) => {
+          const find_field = old_user_input_field_list.find(
+            (old_item: any) => old_item.field == item.field
+          )
+          if (find_field) {
+            return {
+              ...item,
+              value: find_field.value,
+              label:
+                typeof item.label === 'object' && item.label != null ? item.label.label : item.label
             }
-          })
+          } else {
+            return item
+          }
+        })
         set(
           props.nodeModel.properties.node_data,
           'user_input_field_list',