diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/HanlpDictMatchStrategy.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/HanlpDictMatchStrategy.java
index 20171fc0c..7635b6ff7 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/HanlpDictMatchStrategy.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/HanlpDictMatchStrategy.java
@@ -6,6 +6,12 @@ import com.tencent.supersonic.headless.core.chat.knowledge.HanlpMapResult;
 import com.tencent.supersonic.headless.core.chat.knowledge.KnowledgeBaseService;
 import com.tencent.supersonic.headless.core.config.OptimizationConfig;
 import com.tencent.supersonic.headless.core.pojo.QueryContext;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.collections.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashSet;
@@ -14,11 +20,6 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
 import java.util.stream.Collectors;
-import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.collections.CollectionUtils;
-import org.apache.commons.lang3.StringUtils;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
 
 /**
  * HanlpDictMatchStrategy uses <a href="https://www.hanlp.com/">HanLP</a> to
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/pojo/QueryStatement.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/pojo/QueryStatement.java
index ac1757c4b..491a44bc6 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/pojo/QueryStatement.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/pojo/QueryStatement.java
@@ -33,7 +33,7 @@ public class QueryStatement {
     private SemanticModel semanticModel;
 
     private SemanticSchemaResp semanticSchemaResp;
-    private Integer limit;
+    private Integer limit = 1000;
 
     public boolean isOk() {
         this.ok = "".equals(errMsg) && !"".equals(sql);
diff --git a/headless/python/instances/llm_instance.py b/headless/python/instances/llm_instance.py
index 9cdeb10f4..ad7b0d886 100644
--- a/headless/python/instances/llm_instance.py
+++ b/headless/python/instances/llm_instance.py
@@ -12,10 +12,15 @@ from config.config_parse import LLM_PROVIDER_NAME, llm_config_dict
 def get_llm(llm_config: dict):
     if LLM_PROVIDER_NAME in llms.type_to_cls_dict:
         llm_provider = llms.type_to_cls_dict[LLM_PROVIDER_NAME]
-        if llm_config is None:
+        if llm_config is None or llm_config["baseUrl"] is None or llm_config["baseUrl"] == '':
             llm = llm_provider(**llm_config_dict)
         else:
-            llm = llm_provider(**llm_config)
+            openai_llm_config = {}
+            openai_llm_config["model_name"] = llm_config["modelName"]
+            openai_llm_config["openai_api_base"] = llm_config["baseUrl"]
+            openai_llm_config["openai_api_key"] = llm_config["apiKey"]
+            openai_llm_config["temperature"] = llm_config["temperature"]
+            llm = llm_provider(**openai_llm_config)
         return llm
     else:
         raise Exception("llm_provider_name is not supported: {}".format(LLM_PROVIDER_NAME))
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