diff --git a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/problemKnowledgeBase/service/impl/ProblemKnowledgeBaseEOServiceImpl.java b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/problemKnowledgeBase/service/impl/ProblemKnowledgeBaseEOServiceImpl.java
index 1c1a151c1..dbf4ed2dc 100644
--- a/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/problemKnowledgeBase/service/impl/ProblemKnowledgeBaseEOServiceImpl.java
+++ b/jero-boot/jero-boot-modules/src/main/java/com/jero/modules/problemKnowledgeBase/service/impl/ProblemKnowledgeBaseEOServiceImpl.java
@@ -557,9 +557,11 @@ public class ProblemKnowledgeBaseEOServiceImpl extends ServiceImpl<ProblemKnowle
 				if(sysConfig.getConfigName().equals("domainWebImgURL")){
 					String pcUrl = sysConfig.getConfig();
 					String phoneUrl = sysConfig.getPhoneConfig();
-					String content  = problemKnowledgeBaseEO.getContent().replace(pcUrl,phoneUrl);
-					content = content.replace("jero-boot/","jero-boot/phone/");
-					problemKnowledgeBaseEO.setContent(content);
+					if(ObjectUtils.isNotEmpty(problemKnowledgeBaseEO) && StringUtils.isNotBlank(problemKnowledgeBaseEO.getContent())){
+						String content  = problemKnowledgeBaseEO.getContent().replace(pcUrl,phoneUrl);
+						content = content.replace("jero-boot/","jero-boot/phone/");
+						problemKnowledgeBaseEO.setContent(content);
+					}
 					break;
 				}
 			}