diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/ChatServiceImpl.java b/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/ChatServiceImpl.java
index a05f2c7b0..7c17f3902 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/ChatServiceImpl.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/service/impl/ChatServiceImpl.java
@@ -18,7 +18,6 @@ import com.tencent.supersonic.chat.persistence.repository.ChatContextRepository;
 import com.tencent.supersonic.chat.persistence.repository.ChatQueryRepository;
 import com.tencent.supersonic.chat.persistence.repository.ChatRepository;
 import com.tencent.supersonic.chat.service.ChatService;
-import com.tencent.supersonic.chat.utils.SimilarQueryManager;
 import com.tencent.supersonic.common.util.JsonUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.context.annotation.Primary;
@@ -44,14 +43,12 @@ public class ChatServiceImpl implements ChatService {
     private ChatContextRepository chatContextRepository;
     private ChatRepository chatRepository;
     private ChatQueryRepository chatQueryRepository;
-    private SimilarQueryManager solvedQueryManager;
 
     public ChatServiceImpl(ChatContextRepository chatContextRepository, ChatRepository chatRepository,
-            ChatQueryRepository chatQueryRepository, SimilarQueryManager solvedQueryManager) {
+            ChatQueryRepository chatQueryRepository) {
         this.chatContextRepository = chatContextRepository;
         this.chatRepository = chatRepository;
         this.chatQueryRepository = chatQueryRepository;
-        this.solvedQueryManager = solvedQueryManager;
     }
 
     @Override
diff --git a/launchers/standalone/src/main/java/com/tencent/supersonic/ChatDemoLoader.java b/launchers/standalone/src/main/java/com/tencent/supersonic/ChatDemoLoader.java
index 55b1346bb..28b37d507 100644
--- a/launchers/standalone/src/main/java/com/tencent/supersonic/ChatDemoLoader.java
+++ b/launchers/standalone/src/main/java/com/tencent/supersonic/ChatDemoLoader.java
@@ -34,6 +34,7 @@ import com.tencent.supersonic.common.util.JsonUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.CommandLineRunner;
 import org.springframework.core.annotation.Order;
 import org.springframework.stereotype.Component;
@@ -63,11 +64,16 @@ public class ChatDemoLoader implements CommandLineRunner {
     @Autowired
     private SysParameterService sysParameterService;
 
+    @Value("${demo.enabled:false}")
+    private boolean demoEnabled;
+
     @Override
     public void run(String... args) throws Exception {
-        if (checkEnable()) {
-            doRun();
+        if (!checkEnable()) {
+            log.info("skip load chat demo");
+            return;
         }
+        doRun();
     }
 
     public void doRun() {
@@ -501,7 +507,10 @@ public class ChatDemoLoader implements CommandLineRunner {
     }
 
     private boolean checkEnable() {
-        return chatService.getLastQuery(1L) == null;
+        if (!demoEnabled) {
+            return false;
+        }
+        return SemanticDemoLoader.isLoad();
     }
 
 }
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 4eeb6d339..616fea19b 100644
--- a/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java
+++ b/launchers/standalone/src/main/java/com/tencent/supersonic/ModelDemoDataLoader.java
@@ -36,7 +36,6 @@ import com.tencent.supersonic.semantic.model.domain.ModelService;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
 import org.springframework.stereotype.Component;
 
@@ -50,9 +49,6 @@ import java.util.List;
 public class ModelDemoDataLoader {
 
     private User user = User.getFakeUser();
-
-    @Value("${demo.dbType:mysql}")
-    private String demoDb;
     @Autowired
     private DatabaseService databaseService;
     @Autowired
diff --git a/launchers/standalone/src/main/java/com/tencent/supersonic/DemoLoader.java b/launchers/standalone/src/main/java/com/tencent/supersonic/SemanticDemoLoader.java
similarity index 85%
rename from launchers/standalone/src/main/java/com/tencent/supersonic/DemoLoader.java
rename to launchers/standalone/src/main/java/com/tencent/supersonic/SemanticDemoLoader.java
index a0fcd6378..c9fedef62 100644
--- a/launchers/standalone/src/main/java/com/tencent/supersonic/DemoLoader.java
+++ b/launchers/standalone/src/main/java/com/tencent/supersonic/SemanticDemoLoader.java
@@ -12,7 +12,9 @@ import org.springframework.util.CollectionUtils;
 @Component
 @Slf4j
 @Order(1)
-public class DemoLoader implements CommandLineRunner {
+public class SemanticDemoLoader implements CommandLineRunner {
+
+    private static boolean isLoad = false;
 
     @Autowired
     private DomainService domainService;
@@ -23,9 +25,6 @@ public class DemoLoader implements CommandLineRunner {
     @Autowired
     private BenchMarkDemoDataLoader benchMarkDemoLoader;
 
-    @Autowired
-    private ChatDemoLoader chatDemoLoader;
-
     @Value("${demo.enabled:false}")
     private boolean demoEnabled;
 
@@ -37,6 +36,7 @@ public class DemoLoader implements CommandLineRunner {
         }
         modelDataDemoLoader.doRun();
         benchMarkDemoLoader.doRun();
+        isLoad = true;
     }
 
     private boolean checkLoadDemo() {
@@ -46,4 +46,8 @@ public class DemoLoader implements CommandLineRunner {
         return CollectionUtils.isEmpty(domainService.getDomainList());
     }
 
+    public static boolean isLoad() {
+        return isLoad;
+    }
+
 }
\ No newline at end of file