diff --git a/common/src/main/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelper.java b/common/src/main/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelper.java
index 23bc459be..ded4ea1d0 100644
--- a/common/src/main/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelper.java
+++ b/common/src/main/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelper.java
@@ -1,14 +1,6 @@
 package com.tencent.supersonic.common.jsqlparser;
 
 import com.tencent.supersonic.common.util.StringUtil;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-import java.util.stream.Collectors;
 import lombok.extern.slf4j.Slf4j;
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.expression.Alias;
@@ -50,6 +42,15 @@ import net.sf.jsqlparser.statement.select.WithItem;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.util.CollectionUtils;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.stream.Collectors;
+
 /**
  * Sql Parser Select Helper
  */
@@ -97,6 +98,22 @@ public class SqlSelectHelper {
         });
     }
 
+    public static List<String> gePureSelectFields(String sql) {
+        List<PlainSelect> plainSelectList = getPlainSelect(sql);
+        Set<String> result = new HashSet<>();
+        plainSelectList.stream().forEach(plainSelect -> {
+            List<SelectItem<?>> selectItems = plainSelect.getSelectItems();
+            for (SelectItem selectItem : selectItems) {
+                if (!(selectItem.getExpression() instanceof Column)) {
+                    continue;
+                }
+                Column column = (Column) selectItem.getExpression();
+                result.add(column.getColumnName());
+            }
+        });
+        return new ArrayList<>(result);
+    }
+
     public static List<String> getSelectFields(String sql) {
         List<PlainSelect> plainSelectList = getPlainSelect(sql);
         if (CollectionUtils.isEmpty(plainSelectList)) {
diff --git a/common/src/test/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelperTest.java b/common/src/test/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelperTest.java
index d9d1fa411..fce07dca1 100644
--- a/common/src/test/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelperTest.java
+++ b/common/src/test/java/com/tencent/supersonic/common/jsqlparser/SqlSelectHelperTest.java
@@ -282,4 +282,23 @@ class SqlSelectHelperTest {
         Assert.assertEquals(tableName, "超音数");
     }
 
+    @Test
+    void testGetPureSelectFields() {
+
+        String sql = "select TIMESTAMPDIFF(MONTH, 发布日期, '2018-06-01')  from `超音数` "
+                + "where 数据日期 = '2023-08-08' and 用户 = 'alice'";
+        List<String> selectFields = SqlSelectHelper.gePureSelectFields(sql);
+        Assert.assertEquals(selectFields.size(), 0);
+
+        sql = "select 发布日期,数据日期  from `超音数` where "
+                + "数据日期 = '2023-08-08' and 用户 = 'alice'";
+        selectFields = SqlSelectHelper.gePureSelectFields(sql);
+        Assert.assertEquals(selectFields.size(), 2);
+
+        sql = "select 发布日期,数据日期,TIMESTAMPDIFF(MONTH, 发布日期, '2018-06-01')  from `超音数` where "
+                + "数据日期 = '2023-08-08' and 用户 = 'alice'";
+        selectFields = SqlSelectHelper.gePureSelectFields(sql);
+        Assert.assertEquals(selectFields.size(), 2);
+    }
+
 }
diff --git a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/corrector/GroupByCorrector.java b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/corrector/GroupByCorrector.java
index f58e894d1..c971df07a 100644
--- a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/corrector/GroupByCorrector.java
+++ b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/corrector/GroupByCorrector.java
@@ -12,6 +12,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.core.env.Environment;
 import org.springframework.util.CollectionUtils;
+
 import java.util.List;
 import java.util.Set;
 import java.util.stream.Collectors;
@@ -72,7 +73,7 @@ public class GroupByCorrector extends BaseSemanticCorrector {
         SemanticSchema semanticSchema = chatQueryContext.getSemanticSchema();
         //add alias field name
         Set<String> dimensions = getDimensions(dataSetId, semanticSchema);
-        List<String> selectFields = SqlSelectHelper.getSelectFields(correctS2SQL);
+        List<String> selectFields = SqlSelectHelper.gePureSelectFields(correctS2SQL);
         List<String> aggregateFields = SqlSelectHelper.getAggregateFields(correctS2SQL);
         Set<String> groupByFields = selectFields.stream()
                 .filter(field -> dimensions.contains(field))