diff --git a/jandan_toot.py b/jandan_toot.py
index d409ff4..8aa34b5 100644
--- a/jandan_toot.py
+++ b/jandan_toot.py
@@ -52,22 +52,30 @@ session = requests.session()
 def get_proxy():
   return requests.get("http://118.24.52.95:5010/get/?type=https").json()
 
+usable_proxy = None
+
 def toot(proxy=None):
   jandan_pic_url = 'https://jandan.net/pic'
   page_count = 2
   status_list = []
   id_list = load_id()
+  global usable_proxy
   if not id_list:
     id_list = []
 
   session.headers.update(ramdom_ua())
-  session.proxies.update({"https": "https://{}".format(proxy)})
+  if proxy:
+    session.proxies.update({"https": "https://{}".format(proxy)})
 
   while page_count and jandan_pic_url:
     resp = session.get(jandan_pic_url, timeout=2)
     if resp.status_code != 200:
+      usable_proxy = None
+      if resp.status_code == 403:
+        raise ValueError('http status code 403')
       time.sleep(10)
       continue
+    usable_proxy = proxy
     soup = BeautifulSoup(resp.content, 'html.parser')
     jandan_pic_url = soup.find(class_='previous-comment-page')['href']
     page_count -= 1
@@ -134,8 +142,10 @@ def toot(proxy=None):
 while True:
   try:
     logger.info('%s !!!! start', time.asctime())
-    proxy = get_proxy()
-    toot(proxy=proxy['proxy'])
+    if not usable_proxy:
+      proxy = get_proxy()
+      usable_proxy = proxy.get('proxy')
+    toot(proxy=usable_proxy)
     time.sleep(20)
   except Exception as ex:
     logger.error(traceback.format_exc())