diff --git a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/MultiCustomDictionary.java b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/MultiCustomDictionary.java
index 79cefa92f..c6ba9ec5c 100644
--- a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/MultiCustomDictionary.java
+++ b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/MultiCustomDictionary.java
@@ -33,6 +33,7 @@ import java.util.Objects;
 import java.util.PriorityQueue;
 import java.util.TreeMap;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.PriorityBlockingQueue;
 
 import static com.hankcs.hanlp.utility.Predefine.logger;
 
@@ -40,7 +41,7 @@ public class MultiCustomDictionary extends DynamicCustomDictionary {
 
     public static int MAX_SIZE = 10;
     public static Boolean removeDuplicates = true;
-    public static ConcurrentHashMap<String, PriorityQueue<Term>> NATURE_TO_VALUES =
+    public static ConcurrentHashMap<String, PriorityBlockingQueue<Term>> NATURE_TO_VALUES =
             new ConcurrentHashMap<>();
     private static boolean addToSuggesterTrie = true;
 
@@ -146,9 +147,10 @@ public class MultiCustomDictionary extends DynamicCustomDictionary {
                 }
                 for (int i = 0; i < attribute.nature.length; i++) {
                     Nature nature = attribute.nature[i];
-                    PriorityQueue<Term> priorityQueue = NATURE_TO_VALUES.get(nature.toString());
+                    PriorityBlockingQueue<Term> priorityQueue =
+                            NATURE_TO_VALUES.get(nature.toString());
                     if (Objects.isNull(priorityQueue)) {
-                        priorityQueue = new PriorityQueue<>(MAX_SIZE,
+                        priorityQueue = new PriorityBlockingQueue<>(MAX_SIZE,
                                 Comparator.comparingInt(Term::getFrequency).reversed());
                         NATURE_TO_VALUES.put(nature.toString(), priorityQueue);
                     }
diff --git a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/SearchService.java b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/SearchService.java
index 40a9504b2..8c14ffa53 100644
--- a/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/SearchService.java
+++ b/headless/chat/src/main/java/com/tencent/supersonic/headless/chat/knowledge/SearchService.java
@@ -24,6 +24,7 @@ import java.util.PriorityQueue;
 import java.util.Set;
 import java.util.TreeMap;
 import java.util.TreeSet;
+import java.util.concurrent.PriorityBlockingQueue;
 import java.util.stream.Collectors;
 
 @Slf4j
@@ -200,7 +201,7 @@ public class SearchService {
     public static List<String> getDimensionValue(DimensionValueReq dimensionValueReq) {
         String nature = DictWordType.NATURE_SPILT + dimensionValueReq.getModelId()
                 + DictWordType.NATURE_SPILT + dimensionValueReq.getElementID();
-        PriorityQueue<Term> terms = MultiCustomDictionary.NATURE_TO_VALUES.get(nature);
+        PriorityBlockingQueue<Term> terms = MultiCustomDictionary.NATURE_TO_VALUES.get(nature);
         if (CollectionUtils.isEmpty(terms)) {
             return new ArrayList<>();
         }
diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DictUtils.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DictUtils.java
index f2dbc16f5..a4ab0cfc5 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DictUtils.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DictUtils.java
@@ -422,33 +422,25 @@ public class DictUtils {
         return joiner.toString();
     }
 
-    public String defaultDateFilter(DateConf dateConf) {
-        String format = itemValueDateFormat;
-        String start = LocalDate.now().minusDays(itemValueDateStart)
-                .format(DateTimeFormatter.ofPattern(format));
-        String end = LocalDate.now().minusDays(itemValueDateEnd)
-                .format(DateTimeFormatter.ofPattern(format));
-        if (Objects.nonNull(dateConf)) {
-            return String.format("( %s >= '%s' and %s <= '%s' )", dateConf.getDateField(), start,
-                    dateConf.getDateField(), end);
-        } else {
-            return String.format("( %s >= '%s' and %s <= '%s' )", "dt", start, "dt", end);
-        }
-    }
-
     private String generateDictDateFilter(DictItemResp dictItemResp) {
-        ItemValueConfig config = dictItemResp.getConfig();
-        if (config == null) {
+        Dimension partitionTimeDimension = getPartitionTimeDimension(dictItemResp.getModelId());
+        // 如果没有设置数据时间维度，则无法做时间分区过滤
+        if (partitionTimeDimension == null) {
             return "";
         }
 
-        if (!partitionedModel(dictItemResp.getModelId())) {
-            return "";
-        }
-        // 未进行设置
+        ItemValueConfig config = dictItemResp.getConfig();
+        // 默认使用数据时间维度进行时间分区过滤
         if (Objects.isNull(config) || Objects.isNull(config.getDateConf())) {
-            return defaultDateFilter(null);
+            String startDate = LocalDate.now().minusDays(itemValueDateStart)
+                    .format(DateTimeFormatter.ofPattern(partitionTimeDimension.getDateFormat()));
+            String endDate = LocalDate.now().minusDays(itemValueDateEnd)
+                    .format(DateTimeFormatter.ofPattern(partitionTimeDimension.getDateFormat()));
+            return String.format("( %s >= '%s' and %s <= '%s' )",
+                    partitionTimeDimension.getBizName(), startDate,
+                    partitionTimeDimension.getBizName(), endDate);
         }
+
         // 全表扫描
         if (DateConf.DateMode.ALL.equals(config.getDateConf().getDateMode())) {
             return "";
@@ -467,15 +459,15 @@ public class DictUtils {
         return "";
     }
 
-    private boolean partitionedModel(Long modelId) {
+    private Dimension getPartitionTimeDimension(Long modelId) {
         ModelResp model = modelService.getModel(modelId);
         if (Objects.nonNull(model)) {
             List<Dimension> timeDims = model.getTimeDimension();
             if (!CollectionUtils.isEmpty(timeDims)) {
-                return true;
+                return timeDims.get(0);
             }
         }
-        return false;
+        return null;
     }
 
     private String generateDictDateFilterRecent(DictItemResp dictItemResp) {