diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagMetaServiceImpl.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagMetaServiceImpl.java
index 8b9e6bfee..2939c344a 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagMetaServiceImpl.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagMetaServiceImpl.java
@@ -56,9 +56,9 @@ public class TagMetaServiceImpl implements TagMetaService {
     private final DomainService domainService;
 
     public TagMetaServiceImpl(TagRepository tagRepository, ModelService modelService,
-                              CollectService collectService, @Lazy DimensionService dimensionService,
-                              @Lazy MetricService metricService, TagObjectService tagObjectService,
-                              DomainService domainService) {
+            CollectService collectService, @Lazy DimensionService dimensionService,
+            @Lazy MetricService metricService, TagObjectService tagObjectService,
+            DomainService domainService) {
         this.tagRepository = tagRepository;
         this.modelService = modelService;
         this.collectService = collectService;
@@ -106,6 +106,9 @@ public class TagMetaServiceImpl implements TagMetaService {
     @Override
     public TagResp getTag(Long id, User user) {
         TagDO tagDO = tagRepository.getTagById(id);
+        if (Objects.isNull(tagDO)) {
+            return null;
+        }
         TagResp tagResp = convert2Resp(tagDO);
         List<TagResp> tagRespList = Arrays.asList(tagResp);
         fillModelInfo(tagRespList);
@@ -141,7 +144,7 @@ public class TagMetaServiceImpl implements TagMetaService {
         BeanUtils.copyProperties(tagMarketPageReq, tagFilter);
         tagFilter.setModelIds(modelIds);
         PageInfo<TagResp> tagDOPageInfo = PageHelper.startPage(tagMarketPageReq.getCurrent(),
-                tagMarketPageReq.getPageSize())
+                        tagMarketPageReq.getPageSize())
                 .doSelectPageInfo(() -> getTags(tagFilter));
 
         List<TagResp> tagRespList = tagDOPageInfo.getList();
diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagQueryServiceImpl.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagQueryServiceImpl.java
index b558ffb53..8354c0626 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagQueryServiceImpl.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/TagQueryServiceImpl.java
@@ -62,6 +62,9 @@ public class TagQueryServiceImpl implements TagQueryService {
         itemValueResp.setItemId(itemValueReq.getItemId());
         itemValueResp.setType(SchemaElementType.TAG);
         TagResp tag = tagMetaService.getTag(itemValueReq.getItemId(), user);
+        if (Objects.isNull(tag)) {
+            return null;
+        }
         checkTag(tag);
         itemValueResp.setName(tag.getName());
         itemValueResp.setBizName(tag.getBizName());
diff --git a/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java b/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java
index 92196de9a..a47231384 100644
--- a/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java
+++ b/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java
@@ -40,6 +40,7 @@ import com.tencent.supersonic.headless.api.pojo.enums.DimensionType;
 import com.tencent.supersonic.headless.api.pojo.enums.IdentifyType;
 import com.tencent.supersonic.headless.api.pojo.enums.MetricDefineType;
 import com.tencent.supersonic.headless.api.pojo.enums.SemanticType;
+import com.tencent.supersonic.headless.api.pojo.enums.TagDefineType;
 import com.tencent.supersonic.headless.api.pojo.request.DataSetReq;
 import com.tencent.supersonic.headless.api.pojo.request.DatabaseReq;
 import com.tencent.supersonic.headless.api.pojo.request.DimensionReq;
@@ -47,6 +48,7 @@ import com.tencent.supersonic.headless.api.pojo.request.DomainReq;
 import com.tencent.supersonic.headless.api.pojo.request.MetricReq;
 import com.tencent.supersonic.headless.api.pojo.request.ModelReq;
 import com.tencent.supersonic.headless.api.pojo.request.TagObjectReq;
+import com.tencent.supersonic.headless.api.pojo.request.TagReq;
 import com.tencent.supersonic.headless.server.service.DataSetService;
 import com.tencent.supersonic.headless.server.service.DatabaseService;
 import com.tencent.supersonic.headless.server.service.DimensionService;
@@ -113,6 +115,7 @@ public class ModelDemoDataLoader {
             addModel_4();
             updateDimension();
             updateMetric();
+            addTags();
             updateMetric_pv();
             addDataSet_1();
             addDataSet_2();
@@ -370,6 +373,20 @@ public class ModelDemoDataLoader {
         modelService.createModel(modelReq, user);
     }
 
+    private void addTags() {
+        addTag(4L);
+        addTag(5L);
+        addTag(6L);
+        addTag(7L);
+    }
+
+    private void addTag(Long itemId) {
+        TagReq tagReq = new TagReq();
+        tagReq.setTagDefineType(TagDefineType.DIMENSION);
+        tagReq.setItemId(itemId);
+        tagMetaService.create(tagReq, User.getFakeUser());
+    }
+
     public void updateDimension() throws Exception {
         DimensionReq dimensionReq = new DimensionReq();
         dimensionReq.setType(DimensionType.categorical.name());
diff --git a/launchers/standalone/src/main/resources/application-local.yaml b/launchers/standalone/src/main/resources/application-local.yaml
index cbe243794..5b5337e1b 100644
--- a/launchers/standalone/src/main/resources/application-local.yaml
+++ b/launchers/standalone/src/main/resources/application-local.yaml
@@ -59,8 +59,8 @@ s2:
   langchain4j:
     #1.chat-model
     chat-model:
-      provider: open_ai
-      openai:
+      provider: local_ai
+      local_ai:
         api-key: api_key
         model-name: gpt-3.5-turbo-16k
         temperature: 0.0
diff --git a/launchers/standalone/src/test/java/com/tencent/supersonic/headless/QueryTagValueTest.java b/launchers/standalone/src/test/java/com/tencent/supersonic/headless/QueryTagValueTest.java
new file mode 100644
index 000000000..b720a67be
--- /dev/null
+++ b/launchers/standalone/src/test/java/com/tencent/supersonic/headless/QueryTagValueTest.java
@@ -0,0 +1,26 @@
+package com.tencent.supersonic.headless;
+
+import static org.junit.Assert.assertTrue;
+
+import com.tencent.supersonic.auth.api.authentication.pojo.User;
+import com.tencent.supersonic.headless.api.pojo.SchemaElementType;
+import com.tencent.supersonic.headless.api.pojo.request.ItemValueReq;
+import com.tencent.supersonic.headless.api.pojo.response.ItemValueResp;
+import com.tencent.supersonic.headless.server.service.TagQueryService;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class QueryTagValueTest extends BaseTest {
+
+    @Autowired
+    protected TagQueryService tagQueryService;
+
+    @Test
+    public void testQueryTagValue() throws Exception {
+        ItemValueReq itemValueReq = new ItemValueReq();
+        itemValueReq.setItemId(1L);
+        itemValueReq.setType(SchemaElementType.DIMENSION);
+        ItemValueResp itemValueResp = tagQueryService.queryTagValue(itemValueReq, User.getFakeUser());
+        assertTrue(itemValueResp != null);
+    }
+}