diff --git a/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/adapter/repository/KeyPointsMapper.java b/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/adapter/repository/KeyPointsMapper.java
index 2f3c2e0..f3a293f 100644
--- a/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/adapter/repository/KeyPointsMapper.java
+++ b/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/adapter/repository/KeyPointsMapper.java
@@ -3,6 +3,7 @@
 import cn.hutool.core.date.DateTime;
 import com.achobeta.domain.keypoints_explanation.model.valobj.*;
 import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Insert;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
@@ -70,6 +71,10 @@ public interface KeyPointsMapper {
 
     @Select("delete from knowledgePoint where status = -1")
     void deleteKnowledgeTure();
+
+    @Select("select knowledge_point_id as id, knowledge_point_name as keyPoints from knowledgePoint" +
+            " where user_id = #{userId} and parent_knowledge_point_id = #{knowledgeId} and status = -1")
+    List<KeyPointsVO> getPreDelSonKeyPoints(String knowledgeId, String userId);
     @Insert("insert into knowledgePoint(knowledge_point_id, knowledge_point_name, user_id)" +
             " values(#{knowledgePointId}, #{knowledgePointName}, #{userId})")
     void insertNewPoint4MistakeQuestion(String userId, String knowledgePointId, String knowledgePointName);
diff --git a/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/service/etendbiz/KeyPointsExplanationService.java b/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/service/etendbiz/KeyPointsExplanationService.java
index 253cbbc..021a947 100644
--- a/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/service/etendbiz/KeyPointsExplanationService.java
+++ b/refine-domain/src/main/java/com/achobeta/domain/keypoints_explanation/service/etendbiz/KeyPointsExplanationService.java
@@ -181,7 +181,7 @@ public void deleteKnowledgePoint(String knowledgeId, String userId) {
     @Override
     public void undoDeleteKnowledgePoint(String knowledgeId, String userId) {
         if(knowledgeId != null){
-            List<KeyPointsVO> knowledges = keyPointsMapper.getSonKeyPoints(knowledgeId, userId);
+            List<KeyPointsVO> knowledges = keyPointsMapper.getPreDelSonKeyPoints(knowledgeId, userId);
             keyPointsMapper.undoDeleteKnowledgePoint(knowledgeId, userId);
             for (KeyPointsVO knowledge : knowledges) {
                 undoDeleteKnowledgePoint(knowledge.getId(), userId);
diff --git a/refine-trigger/src/main/java/com/achobeta/trigger/http/KeyPointsExplanationController.java b/refine-trigger/src/main/java/com/achobeta/trigger/http/KeyPointsExplanationController.java
index 099afc0..e038ca2 100644
--- a/refine-trigger/src/main/java/com/achobeta/trigger/http/KeyPointsExplanationController.java
+++ b/refine-trigger/src/main/java/com/achobeta/trigger/http/KeyPointsExplanationController.java
@@ -294,6 +294,7 @@ public Response<String> addSonPoint(@PathVariable String knowledgeId, @RequestBo
     public Response<String> deleteKnowledgePoint(@PathVariable String knowledgeId ) {
         String userId = UserContext.getUserId();
         try {
+            log.info("删除知识点:{}", knowledgeId);
             deleteList.put(knowledgeId, LocalDateTime.now());
             keyPointsExplanationService.deleteKnowledgePoint(knowledgeId, userId);
         } catch (Exception e) {
@@ -310,6 +311,7 @@ public Response<String> deleteKnowledgePoint(@PathVariable String knowledgeId )
     public Response<String> undoDeleteKnowledgePoint(@PathVariable String knowledgeId ) {
         String userId = UserContext.getUserId();
         try {
+            log.info("撤销删除知识点:{}", knowledgeId);
             if(LocalDateTime.now().isAfter(deleteList.get(knowledgeId).minusMinutes(30))){
                 deleteList.remove(knowledgeId);
                 keyPointsExplanationService.undoDeleteKnowledgePoint(knowledgeId, userId);