diff --git a/policy/enemy_policy_selection.py b/policy/enemy_policy_selection.py
index 3c8c2390c30348576cffd18dc70f45787990dcb9..3350340f7e22048e5069f1558f663a6180d6b638 100644
--- a/policy/enemy_policy_selection.py
+++ b/policy/enemy_policy_selection.py
@@ -41,14 +41,16 @@ def move_new_to_old():
     # 读入目前新版本文件夹里的所有模型
     for root, dirs, files in os.walk(new_model_files):
         if "saved_model.pb" in files:
-            tmp.append((os.stat(root).st_ctime, root))
+            if os.path.exists(root):
+                tmp.append((os.stat(root).st_ctime, root))
     sorted_list = sorted(tmp, key=lambda x: (x[0], x[1]), reverse=True)
 
     # 根据时间将应该被划分为旧版本的文件筛选出来，转移到旧版本文件夹里面
     for model in sorted_list:
         if (sorted_list[0][0] - model[0]) / 3600 > time_from_newest_to_old:
             create_time = time.strftime("%Y-%m-%d-%H-%M-%S", time.localtime(model[0]))
-            shutil.move(model[1], old_model_files + '/' + create_time + '/eval_policy')
+            if os.path.exists(model[1]):
+                shutil.move(model[1], old_model_files + '/' + create_time + '/eval_policy')
     #
     # for model in existed_models_path:
     #     if(sorted_list[0][0] - model[0]) / 3600 <= time_from_newest_to_old:
@@ -70,30 +72,39 @@ def generate_enemy_policy():
     for path in existed_version_models:
         for root, dirs, files in os.walk(path):
             if "saved_model.pb" in files:
-                existed_models_path.append(root)
+                if os.path.exists(root):
+                    existed_models_path.append(root)
 
     # 读入新版本模型的路径
     for root, dirs, files in os.walk(new_model_files):
         if "saved_model.pb" in files:
-            new_models_path.append((os.stat(root).st_ctime, root))
+            if os.path.exists(root):
+                new_models_path.append((os.stat(root).st_ctime, root))
     new_models_path = sorted(new_models_path, key=lambda x: (x[0], x[1]), reverse=True)
 
     # 读入旧版本模型的路径
     for root, dirs, files in os.walk(old_model_files):
         if "saved_model.pb" in files:
-            old_models_path.append(root)
+            if os.path.exists(root):
+                old_models_path.append(root)
 
     rand = random.random()
     if rand < new_version_rate:
-        print("env_constructed with new_version")
-        return new_models_path[0][1]
+        if os.path.exists(new_models_path[0][1]):
+            print("env_constructed with new_version")
+            return new_models_path[0][1]
 
     if len(old_models_path) > 0 and new_version_rate <= rand < new_version_rate + old_version_rate:
+        idx = random.randint(0, len(old_models_path) - 1)
         print("env_constructed with old_version")
-        return old_models_path[random.randint(0, len(old_models_path) - 1)]
-
-    print("env_constructed with existed_version")
-    return existed_models_path[random.randint(0, len(existed_models_path) - 1)]
+        if os.path.exists(old_models_path[idx]):
+            return old_models_path[idx]
+
+    if len(existed_models_path) > 0:
+        print("env_constructed with existed_version")
+        idx = random.randint(0, len(existed_models_path) - 1)
+        if os.path.exists(existed_models_path[idx]):
+            return existed_models_path[idx]
 
 
 if __name__ == '__main__':