diff --git a/ruoyi-ui/src/api/hrm/flow.js b/ruoyi-ui/src/api/hrm/flow.js
index b075983..521090d 100644
--- a/ruoyi-ui/src/api/hrm/flow.js
+++ b/ruoyi-ui/src/api/hrm/flow.js
@@ -250,6 +250,9 @@ export function listHistoryFlowTask(query) {
  * 查询实例对应的所有审批任务
  */
 export function listAssignTask (instId) {
+  if (instId == null || instId === '') {
+    return Promise.resolve({ data: [] })
+  }
   return request({
     url: `/hrm/flow/instance/tasks/${instId}`,
     method: 'get'