diff --git a/src/main/java/com/example/building/service/CategoryAttributeService.java b/src/main/java/com/example/building/service/CategoryAttributeService.java
index 7237ad3..e4b6765 100644
--- a/src/main/java/com/example/building/service/CategoryAttributeService.java
+++ b/src/main/java/com/example/building/service/CategoryAttributeService.java
@@ -2,7 +2,6 @@ package com.example.building.service;
 
 import com.example.building.entity.CategoryAttribute;
 import java.util.List;
-import java.util.Map;
 
 /**
  * 种类属性服务接口
@@ -17,7 +16,7 @@ public interface CategoryAttributeService {
     /**
      * 保存属性
      */
-    void saveAttributes(String categoryId, List<Map<String, Object>> attrs);
+    void saveAttributes(String categoryId, List<CategoryAttribute> attrs);
 
     /**
      * 删除种类的所有属性
diff --git a/src/main/java/com/example/building/service/impl/CategoryAttributeServiceImpl.java b/src/main/java/com/example/building/service/impl/CategoryAttributeServiceImpl.java
index 09f8094..8ae9ad2 100644
--- a/src/main/java/com/example/building/service/impl/CategoryAttributeServiceImpl.java
+++ b/src/main/java/com/example/building/service/impl/CategoryAttributeServiceImpl.java
@@ -31,7 +31,7 @@ public class CategoryAttributeServiceImpl implements CategoryAttributeService {
 
     @Override
     @Transactional
-    public void saveAttributes(String categoryId, List<Map<String, Object>> attrs) {
+    public void saveAttributes(String categoryId, List<CategoryAttribute> attrs) {
         System.out.println("=== saveAttributes called ===");
         System.out.println("categoryId: " + categoryId);
         System.out.println("attrs size: " + (attrs != null ? attrs.size() : 0));
@@ -43,26 +43,16 @@ public class CategoryAttributeServiceImpl implements CategoryAttributeService {
         // 保存新属性
         if (attrs != null && !attrs.isEmpty()) {
             for (int i = 0; i < attrs.size(); i++) {
-                Map<String, Object> attrMap = attrs.get(i);
-                CategoryAttribute attr = new CategoryAttribute();
+                CategoryAttribute attr = attrs.get(i);
                 attr.setAttrId(UUID.randomUUID().toString());
                 attr.setCategoryId(categoryId);
                 attr.setSortOrder(i);
                 
-                if (attrMap.get("name") != null) {
-                    attr.setName(attrMap.get("name").toString());
-                }
-                if (attrMap.get("attrType") != null) {
-                    attr.setAttrType(attrMap.get("attrType").toString());
-                }
-                if (attrMap.get("unit") != null) {
-                    attr.setUnit(attrMap.get("unit").toString());
-                }
-                if (attrMap.get("required") != null) {
-                    attr.setRequired((Boolean) attrMap.get("required"));
-                }
-                if (attrMap.get("formula") != null) {
-                    attr.setFormula(attrMap.get("formula").toString());
+                // 处理 required 字段类型（前端可能是 Boolean，后端存 Integer）
+                if (attr.getRequired() != null) {
+                    if (attr.getRequired() instanceof Boolean) {
+                        attr.setRequired(((Boolean) attr.getRequired()) ? 1 : 0);
+                    }
                 }
                 
                 System.out.println("  attr: " + attr.getName() + ", type=" + attr.getAttrType() + ", unit=" + attr.getUnit());