diff --git a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/searchcenter/service/impl/DocumentSearchServiceImpl.java b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/searchcenter/service/impl/DocumentSearchServiceImpl.java
index 1be72fe12..03e90bafc 100644
--- a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/searchcenter/service/impl/DocumentSearchServiceImpl.java
+++ b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/searchcenter/service/impl/DocumentSearchServiceImpl.java
@@ -1488,7 +1488,13 @@ public class DocumentSearchServiceImpl implements IDocumentSearchService {
             List<ProblemKnowledgeBaseUserEO> problemKnowledgeBaseUserEOList = this.problemKnowledgeBaseUserEOService.list(userPermissionQueryWrapper);
 
             if(CollectionUtils.isNotEmpty(problemKnowledgeBaseUserEOList)){
-                List<String> problemKnowledgeBaseIdList = problemKnowledgeBaseUserEOList.stream().map(ProblemKnowledgeBaseUserEO::getProblemKnowledgeBaseId).distinct().collect(Collectors.toList());
+                List<String> problemKnowledgeBaseIdList = problemKnowledgeBaseUserEOList.stream().filter(e->{
+                    boolean flag = false;
+                    if(StringUtils.isNotEmpty(e.getProblemKnowledgeBaseId())){
+                        flag = true;
+                    }
+                    return flag;
+                }).map(ProblemKnowledgeBaseUserEO::getProblemKnowledgeBaseId).distinct().collect(Collectors.toList());
 
                 //in查询该用户拥有权限的问题知识库id。
                 Map<String, Object> fieldKeyMap2 = new HashMap<>();