diff --git a/src/main/java/com/zcloud/controller/app/inspection/AppSafetyEnvironmentalExplainController.java b/src/main/java/com/zcloud/controller/app/inspection/AppSafetyEnvironmentalExplainController.java
index 6a5d43c3..d9d534a5 100644
--- a/src/main/java/com/zcloud/controller/app/inspection/AppSafetyEnvironmentalExplainController.java
+++ b/src/main/java/com/zcloud/controller/app/inspection/AppSafetyEnvironmentalExplainController.java
@@ -61,7 +61,10 @@ public class AppSafetyEnvironmentalExplainController extends BaseController {
             PageData condition = new PageData();
             condition.put("DEPARTMENT_ID",vector.getString("INSPECTED_DEPARTMENT_ID"));
             List<PageData> parent_list = departmentService.getGenealogy(condition);
-            String corp_infos = parent_list.stream().map(n -> n.getString("NAME")).collect(Collectors.joining("-"));
+            String corp_infos = "";
+            if(parent_list != null) {
+                corp_infos = parent_list.stream().map(n -> n.getString("NAME")).collect(Collectors.joining("-"));
+            }
             vector.put("INSPECTED_DEPARTMENT_NAMES",corp_infos);
         }
         map.put("varList", varList);