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 bea48a7e2..193495a72 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
@@ -1184,6 +1184,15 @@ public class DocumentSearchServiceImpl implements IDocumentSearchService {
                 //高亮
                 if(!"flag".equals(field)){
                     problemKnowledgeBaseHighlight(mapHighlight, field);
+                }else {
+                    // query_string查询
+                    Map<String, Object> map25 = new HashMap<>();
+                    Map<String, Object> map45 = new HashMap<>();
+                    map25.put("query", selectValue);
+                    map25.put("fields", fieldList.toArray());
+                    map25.put("allow_leading_wildcard", false); //禁用了前置通配符
+                    map45.put("query_string", map25);
+                    queryMapJson.add(map45);
                 }
             }
             mapHighlight1.put("fields",mapHighlight);
@@ -1440,7 +1449,7 @@ public class DocumentSearchServiceImpl implements IDocumentSearchService {
         list1.add("</text>");
         mapTemp.put("pre_tags", list);
         mapTemp.put("post_tags", list1);
-        mapTemp.put("fragment_size", 550);//高亮字段内容长度，去除html样式标签，统计字数，设置为200
+        mapTemp.put("fragment_size", 280);//高亮字段内容长度，去除html样式标签，统计字数，设置为200
         mapTemp.put("number_of_fragments", 1);//高亮内容默认分为5段, 此处设置为一段
         mapTemp.put("type", "plain");
         mapHighlight.put(key, mapTemp);