diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/config/OptimizationConfig.java b/chat/core/src/main/java/com/tencent/supersonic/chat/config/OptimizationConfig.java
index 1f43151c6..51b4ac39d 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/config/OptimizationConfig.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/config/OptimizationConfig.java
@@ -1,5 +1,6 @@
 package com.tencent.supersonic.chat.config;
 
+import com.tencent.supersonic.chat.query.llm.s2sql.LLMReq.SqlGenerationMode;
 import com.tencent.supersonic.common.service.SysParameterService;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
@@ -57,6 +58,9 @@ public class OptimizationConfig {
     @Value("${s2SQL.linking.value.switch:true}")
     private boolean useLinkingValueSwitch;
 
+    @Value("${s2SQL.generation:TWO_PASS_AUTO_COT}")
+    private SqlGenerationMode sqlGenerationMode;
+
     @Value("${s2SQL.use.switch:true}")
     private boolean useS2SqlSwitch;
 
@@ -139,6 +143,10 @@ public class OptimizationConfig {
         return convertValue("s2SQL.linking.value.switch", Boolean.class, useLinkingValueSwitch);
     }
 
+    public SqlGenerationMode getSqlGenerationMode() {
+        return convertValue("s2SQL.generation", SqlGenerationMode.class, sqlGenerationMode);
+    }
+
     public <T> T convertValue(String paramName, Class<T> targetType, T defaultValue) {
         try {
             String value = sysParameterService.getSysParameter().getParameterByName(paramName);
@@ -151,6 +159,8 @@ public class OptimizationConfig {
                 return targetType.cast(Integer.parseInt(value));
             } else if (targetType == Boolean.class) {
                 return targetType.cast(Boolean.parseBoolean(value));
+            } else if (targetType == SqlGenerationMode.class) {
+                return targetType.cast(SqlGenerationMode.valueOf(value));
             }
         } catch (Exception e) {
             log.error("convertValue", e);
diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/LLMRequestService.java b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/LLMRequestService.java
index 09b45d89c..391d86893 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/LLMRequestService.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/LLMRequestService.java
@@ -132,6 +132,7 @@ public class LLMRequestService {
             currentDate = DateUtils.getBeforeDate(0);
         }
         llmReq.setCurrentDate(currentDate);
+        llmReq.setSqlGenerationMode(optimizationConfig.getSqlGenerationMode());
         return llmReq;
     }
 
diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/SqlGenerationFactory.java b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/SqlGenerationFactory.java
index cd6fd0bc2..6aa0586bc 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/SqlGenerationFactory.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/sql/llm/SqlGenerationFactory.java
@@ -5,9 +5,6 @@ import com.tencent.supersonic.chat.query.llm.s2sql.LLMReq.SqlGenerationMode;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
-/**
- * Sql generation factory
- */
 public class SqlGenerationFactory {
 
     private static Map<SqlGenerationMode, SqlGeneration> sqlGenerationMap = new ConcurrentHashMap<>();
diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/query/llm/s2sql/LLMReq.java b/chat/core/src/main/java/com/tencent/supersonic/chat/query/llm/s2sql/LLMReq.java
index 2be690891..f4a78ab2a 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/query/llm/s2sql/LLMReq.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/query/llm/s2sql/LLMReq.java
@@ -19,7 +19,7 @@ public class LLMReq {
 
     private String priorExts;
 
-    private SqlGenerationMode sqlGenerationMode = SqlGenerationMode.TWO_PASS_AUTO_COT;
+    private SqlGenerationMode sqlGenerationMode;
 
     @Data
     public static class ElementValue {
diff --git a/common/src/main/java/com/tencent/supersonic/common/pojo/SysParameter.java b/common/src/main/java/com/tencent/supersonic/common/pojo/SysParameter.java
index d21b7105b..f257d1ce0 100644
--- a/common/src/main/java/com/tencent/supersonic/common/pojo/SysParameter.java
+++ b/common/src/main/java/com/tencent/supersonic/common/pojo/SysParameter.java
@@ -87,10 +87,10 @@ public class SysParameter {
         parameters.add(new Parameter("llm.temperature", "0.0",
                 "温度值", "number", "Parser相关配置"));
 
-        Parameter s2SQLParameter = new Parameter("s2SQL.generation", "2_pass_auto_cot_self_consistency",
+        Parameter s2SQLParameter = new Parameter("s2SQL.generation", "TWO_PASS_AUTO_COT",
                 "S2SQL生成方式", "list", "Parser相关配置");
-        s2SQLParameter.setCandidateValues(Lists.newArrayList("1_pass_auto_cot", "1_pass_auto_cot_self_consistency",
-                "2_pass_auto_cot", "2_pass_auto_cot_self_consistency"));
+        s2SQLParameter.setCandidateValues(Lists.newArrayList("ONE_PASS_AUTO_COT", "ONE_PASS_AUTO_COT_SELF_CONSISTENCY",
+                "TWO_PASS_AUTO_COT", "TWO_PASS_AUTO_COT_SELF_CONSISTENCY"));
         parameters.add(s2SQLParameter);
         parameters.add(new Parameter("s2SQL.linking.value.switch", "true",
                 "是否将Mapper探测识别到的维度值提供给大模型", "为了数据安全考虑, 这里可进行开关选择",