diff --git a/adc-da-search/src/main/java/com/adc/da/search/service/impl/SearchCenterServiceImpl.java b/adc-da-search/src/main/java/com/adc/da/search/service/impl/SearchCenterServiceImpl.java
index fa4f21b3..88bf234f 100644
--- a/adc-da-search/src/main/java/com/adc/da/search/service/impl/SearchCenterServiceImpl.java
+++ b/adc-da-search/src/main/java/com/adc/da/search/service/impl/SearchCenterServiceImpl.java
@@ -288,7 +288,9 @@ public class SearchCenterServiceImpl implements SearchCenterService {
                     if(json instanceof org.json.JSONArray){
                         fields = JSONObject.parseArray(collectAttrMap.get(field).toString(),String.class);
                     }else {
-                        fields.add(collectAttrMap.get(field).toString());
+                        if(!json.equals("null")){
+                            fields.add(collectAttrMap.get(field).toString());
+                        }
                     }
                     if(!fields.isEmpty()){
                         for (String str : fields) {