diff --git a/src/main/java/cn/lihongjie/coal/dto/CommonQuery.java b/src/main/java/cn/lihongjie/coal/dto/CommonQuery.java
index 6b18d0dc..80ce8127 100644
--- a/src/main/java/cn/lihongjie/coal/dto/CommonQuery.java
+++ b/src/main/java/cn/lihongjie/coal/dto/CommonQuery.java
@@ -11,9 +11,11 @@ import jakarta.persistence.criteria.Root;
 import jakarta.persistence.metamodel.Attribute;
 import jakarta.persistence.metamodel.EntityType;
 import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 import lombok.With;
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.domain.Specification;
@@ -63,6 +65,7 @@ public class CommonQuery {
         private String key;
         private String opt;
         private String value;
+        @Builder.Default
         private String group = "default";
         private String min;
         private String max;
@@ -421,6 +424,8 @@ public class CommonQuery {
 
                 if (CollectionUtils.isNotEmpty(items)) {
 
+                    items.forEach(x -> x.setGroup(StringUtils.defaultIfBlank(x.getGroup(), "default")));
+
                     Map<String, List<QueryItem>> group = items.stream().collect(Collectors.groupingBy(i -> i.group));
 
                     List<Predicate> orPredicates = new ArrayList<>();