diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35253a8d4..953671c34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,7 +11,7 @@
   - add datasource agg_time option
   - add function name adaptor in clickhouse
   - add dimension and metric show in dsl
-  - add support for dimensions and metrics to dynamically update the knowledge base
+  
   
   ### Updated
   - update user guide doc
diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/SearchServiceImpl.java b/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/SearchServiceImpl.java
index 4a6827b82..eff21a725 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/SearchServiceImpl.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/SearchServiceImpl.java
@@ -197,6 +197,15 @@ public class SearchServiceImpl implements SearchService {
                 .schemaElementType(schemaElementType)
                 .subRecommend(wordName)
                 .build();
+        ItemNameVisibilityInfo visibility = (ItemNameVisibilityInfo) caffeineCache.getIfPresent(modelId);
+        if (visibility == null) {
+            visibility = configService.getVisibilityByModelId(modelId);
+            caffeineCache.put(modelId, visibility);
+        }
+        if (visibility.getBlackMetricNameList().contains(searchResult.getRecommend())
+                || visibility.getBlackDimNameList().contains(searchResult.getRecommend())) {
+            return searchResults;
+        }
         if (metricModelCount <= 0 && !existMetricAndDimension) {
             if (filterByQueryFilter(wordName, queryFilters)) {
                 return searchResults;
@@ -204,12 +213,7 @@ public class SearchServiceImpl implements SearchService {
             searchResults.add(searchResult);
             int metricSize = getMetricSize(natureToNameMap);
             //invisibility to filter  metrics
-            ItemNameVisibilityInfo itemNameVisibility = (ItemNameVisibilityInfo) caffeineCache.getIfPresent(modelId);
-            if (itemNameVisibility == null) {
-                itemNameVisibility = configService.getVisibilityByModelId(modelId);
-                caffeineCache.put(modelId, itemNameVisibility);
-            }
-            List<String> blackMetricNameList = itemNameVisibility.getBlackMetricNameList();
+            List<String> blackMetricNameList = visibility.getBlackMetricNameList();
             List<String> metrics = filerMetricsByModel(metricsDb, modelId, metricSize * 3)
                     .stream().filter(o -> !blackMetricNameList.contains(o))
                     .limit(metricSize).collect(Collectors.toList());
@@ -328,14 +332,10 @@ public class SearchServiceImpl implements SearchService {
                     visibility = configService.getVisibilityByModelId(modelId);
                     caffeineCache.put(modelId, visibility);
                 }
-                if (semanticType.equals(SchemaElementType.DIMENSION)
+                if (!visibility.getBlackMetricNameList().contains(mapResult.getName())
                         && !visibility.getBlackDimNameList().contains(mapResult.getName())) {
                     searchResults.add(searchResult);
                 }
-                if (semanticType.equals(SchemaElementType.METRIC)
-                        && !visibility.getBlackMetricNameList().contains(mapResult.getName())) {
-                    searchResults.add(searchResult);
-                }
             }
             log.info("parseResult:{},dimensionMetricClassIds:{},possibleModels:{}", mapResult, dimensionMetricClassIds,
                     possibleModels);
diff --git a/chat/knowledge/src/main/java/com/tencent/supersonic/knowledge/utils/HanlpHelper.java b/chat/knowledge/src/main/java/com/tencent/supersonic/knowledge/utils/HanlpHelper.java
index e2b4a9420..b549a121c 100644
--- a/chat/knowledge/src/main/java/com/tencent/supersonic/knowledge/utils/HanlpHelper.java
+++ b/chat/knowledge/src/main/java/com/tencent/supersonic/knowledge/utils/HanlpHelper.java
@@ -167,7 +167,7 @@ public class HanlpHelper {
     public static void removeFromCustomDictionary(DictWord dictWord) {
         log.info("dictWord:{}", dictWord);
         CoreDictionary.Attribute attribute = getDynamicCustomDictionary().get(dictWord.getWord());
-        if (attribute != null) {
+        if (attribute == null) {
             return;
         }
         log.info("get attribute:{}", attribute);