diff --git a/tools/cal_weight.py b/tools/cal_weight.py
index 0194643..19145a4 100644
--- a/tools/cal_weight.py
+++ b/tools/cal_weight.py
@@ -1,5 +1,5 @@
 import os, sys, time, bpy, bmesh, shutil,requests,json
-import platform
+import platform,oss2
 if platform.system() == 'Windows':
     sys.path.append('e:\\libs\\')
 else:
@@ -66,8 +66,63 @@ def cal_weight(obj, size):
     print(f'{size/10}cm：体积 {model_info["volume"]}cm³, 克重 {model_info["weight"]}g')
     return model_info["weight"]
 
+def down_obj_from_oss(workdir, pid, action):
+    if os.path.exists(os.path.join(workdir, action, pid)):
+        print(f'目录{os.path.join(workdir, action, pid)}已存在，跳过')
+        return
+    else:
+        os.makedirs(os.path.join(workdir, action, pid))
+
+    # 根据前缀获取文件列表
+    prefix = f'objs/{action}/{pid}/'
+    filelist = oss2.ObjectIteratorV2(config.oss_bucket, prefix=prefix)
+    print('正在下载:', prefix)
+    obj_filename = ""
+    dirPath = os.path.join(workdir, action, pid)
+    for file in filelist:
+        filename = file.key.split('/')[-1]
+        if filename.endswith('.obj'): 
+            obj_filename = filename
+        # print('正在下载:', file.key)
+        localfile = os.path.join(workdir, action, pid, filename)
+        #判断目录里是否已经存在obj文件了
+        isObjFile = False
+        isJpgFile = False
+        isMtlFile = False
+        for file in os.listdir(dirPath):
+            if file.endswith('.obj'):
+                isObjFile = True
+            
+            if file.endswith('.jpg'):
+                isJpgFile = True
+            
+            if file.endswith('.mtl'):
+                isMtlFile = True
+                
+        
+        if localfile.endswith('.obj'):
+            if isObjFile and os.path.exists(localfile):
+                print(f'目录{dirPath}已存在obj文件，跳过')
+                continue
+        
+        if localfile.endswith('.jpg'):  
+            if isJpgFile and os.path.exists(localfile):
+                print(f'目录{dirPath}已存在jpg文件，跳过')
+                continue
+        
+        if localfile.endswith('.mtl'):
+            if isMtlFile and os.path.exists(localfile):
+                print(f'目录{dirPath}已存在mtl文件，跳过')
+                continue
+            
+
+        config.oss_bucket.get_object_to_file(file.key, localfile)
+
+    return obj_filename
+
+
 def main(action, pid, sizes,orderId=0):
-    libs.down_obj_from_oss(config.workdir, pid, action)
+    down_obj_from_oss(config.workdir, pid, action)
     obj = reload_obj(pid, action)
     
     bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)