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 7fb3e3d2e..1ed91eddf 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
@@ -74,8 +74,8 @@ public class SysParameter {
                 "批量向量召回文本请求个数", "每次进行向量语义召回的原始文本片段个数", "number", "Mapper相关配置"));
         parameters.add(new Parameter("embedding.mapper.number", "5",
                 "批量向量召回文本返回结果个数", "每个文本进行向量语义召回的文本结果个数", "number", "Mapper相关配置"));
-        parameters.add(new Parameter("embedding.mapper.distance.threshold",
-                "0.01", "向量召回相似度阈值", "相似度大于该阈值的则舍弃", "number", "Mapper相关配置"));
+        parameters.add(new Parameter("embedding.mapper.threshold",
+                "0.99", "向量召回相似度阈值", "相似度小于该阈值的则舍弃", "number", "Mapper相关配置"));
 
         //parser config
         Parameter s2SQLParameter = new Parameter("s2SQL.generation", "TWO_PASS_AUTO_COT",
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/EmbeddingMatchStrategy.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/EmbeddingMatchStrategy.java
index 1bc4acc51..3fbe843be 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/EmbeddingMatchStrategy.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/mapper/EmbeddingMatchStrategy.java
@@ -49,13 +49,13 @@ public class EmbeddingMatchStrategy extends BaseMatchStrategy<EmbeddingResult> {
 
     @Override
     public void detectByStep(QueryContext queryContext, Set<EmbeddingResult> existResults, Set<Long> detectDataSetIds,
-            String detectSegment, int offset) {
+                             String detectSegment, int offset) {
 
     }
 
     @Override
     protected void detectByBatch(QueryContext queryContext, Set<EmbeddingResult> results, Set<Long> detectDataSetIds,
-            Set<String> detectSegments) {
+                                 Set<String> detectSegments) {
 
         List<String> queryTextsList = detectSegments.stream()
                 .map(detectSegment -> detectSegment.trim())
@@ -73,9 +73,9 @@ public class EmbeddingMatchStrategy extends BaseMatchStrategy<EmbeddingResult> {
     }
 
     private void detectByQueryTextsSub(Set<EmbeddingResult> results, Set<Long> detectDataSetIds,
-            List<String> queryTextsSub, Map<Long, List<Long>> modelIdToDataSetIds) {
+                                       List<String> queryTextsSub, Map<Long, List<Long>> modelIdToDataSetIds) {
         int embeddingNumber = optimizationConfig.getEmbeddingMapperNumber();
-        Double distance = optimizationConfig.getEmbeddingMapperDistanceThreshold();
+        Double distance = optimizationConfig.getEmbeddingMapperThreshold();
         // step1. build query params
 
         RetrieveQuery retrieveQuery = RetrieveQuery.builder().queryTextsList(queryTextsSub).build();
@@ -94,7 +94,7 @@ public class EmbeddingMatchStrategy extends BaseMatchStrategy<EmbeddingResult> {
                     if (CollectionUtils.isNotEmpty(retrievals)) {
                         retrievals.removeIf(retrieval -> {
                             if (!retrieveQueryResult.getQuery().contains(retrieval.getQuery())) {
-                                return retrieval.getDistance() > distance.doubleValue();
+                                return retrieval.getDistance() > 1 - distance.doubleValue();
                             }
                             return false;
                         });
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/QueryTypeParser.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/QueryTypeParser.java
index 2a86b69b0..94807e55b 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/QueryTypeParser.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/chat/parser/QueryTypeParser.java
@@ -66,7 +66,7 @@ public class QueryTypeParser implements SemanticParser {
             }
             List<String> selectFields = SqlSelectHelper.getSelectFields(sqlInfo.getS2SQL());
             selectFields.addAll(whereFields);
-            List<String> selectWhereFilterByTimeFields = filterByTimeFields(whereFields);
+            List<String> selectWhereFilterByTimeFields = filterByTimeFields(selectFields);
             if (CollectionUtils.isNotEmpty(selectWhereFilterByTimeFields)) {
                 Set<String> tags = semanticSchema.getTags(dataSetId).stream().map(SchemaElement::getName)
                         .collect(Collectors.toSet());
diff --git a/headless/core/src/main/java/com/tencent/supersonic/headless/core/config/OptimizationConfig.java b/headless/core/src/main/java/com/tencent/supersonic/headless/core/config/OptimizationConfig.java
index 5871d8fc6..f1c8f3e83 100644
--- a/headless/core/src/main/java/com/tencent/supersonic/headless/core/config/OptimizationConfig.java
+++ b/headless/core/src/main/java/com/tencent/supersonic/headless/core/config/OptimizationConfig.java
@@ -52,8 +52,8 @@ public class OptimizationConfig {
     @Value("${embedding.mapper.round.number:10}")
     private int embeddingMapperRoundNumber;
 
-    @Value("${embedding.mapper.distance.threshold:0.01}")
-    private Double embeddingMapperDistanceThreshold;
+    @Value("${embedding.mapper.threshold:0.99}")
+    private Double embeddingMapperThreshold;
 
     @Value("${s2SQL.linking.value.switch:true}")
     private boolean useLinkingValueSwitch;
@@ -135,8 +135,8 @@ public class OptimizationConfig {
         return convertValue("embedding.mapper.round.number", Integer.class, embeddingMapperRoundNumber);
     }
 
-    public Double getEmbeddingMapperDistanceThreshold() {
-        return convertValue("embedding.mapper.distance.threshold", Double.class, embeddingMapperDistanceThreshold);
+    public Double getEmbeddingMapperThreshold() {
+        return convertValue("embedding.mapper.threshold", Double.class, embeddingMapperThreshold);
     }
 
     public boolean isUseLinkingValueSwitch() {