diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java b/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
index 9bda063..34f3854 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/projectlib/manage/ProjectLibManage.java
@@ -298,6 +298,7 @@ public class ProjectLibManage {
         UserFullInfoDTO finalUser = user;
 
         Set<String> instCodes = page.getRecords().stream()
+                .filter(p -> StringUtils.isNotBlank(p.getInstCode()))
                 .map(Project::getInstCode).collect(Collectors.toSet());
         List<Task> tasks = taskService.createTaskQuery()
                 .processInstanceIdIn(instCodes)
@@ -551,6 +552,7 @@ public class ProjectLibManage {
         UserFullInfoDTO finalUser = user;
 
         Set<String> instCodes = page.getRecords().stream()
+                .filter(p -> StringUtils.isNotBlank(p.getInstCode()))
                 .map(ProjectPO::getInstCode).collect(Collectors.toSet());
         List<Task> tasks = taskService.createTaskQuery()
                 .processInstanceIdIn(instCodes)