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 4ceb74f0b..0455d852a 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
@@ -15,12 +15,8 @@ import org.apache.shiro.SecurityUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Date;
+import java.util.*;
 import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.transaction.annotation.Propagation;
@@ -164,6 +160,11 @@ public class ProblemKnowledgeBaseEOServiceImpl extends ServiceImpl<ProblemKnowle
 			permissionUser.setProblemKnowledgeBaseId(problemKnowledgeBaseEO.getId());
 		});
 
+		//根据用户id去重。
+		permissionUserList = permissionUserList.stream().collect(Collectors.collectingAndThen(Collectors.toCollection(() ->
+						new TreeSet<>(Comparator.comparing(o -> o.getUserId()))),
+				ArrayList::new));
+
 		//3.把允许的用户添加进权限表。
 		this.problemKnowledgeBaseUserEOService.saveOrUpdateBatch(permissionUserList);
 	}