diff --git a/py12306/helpers/OCR.py b/py12306/helpers/OCR.py
index b376fa8..af9be61 100644
--- a/py12306/helpers/OCR.py
+++ b/py12306/helpers/OCR.py
@@ -60,9 +60,9 @@ class OCR:
         }
         response = self.session.post(API_FREE_CODE_QCR_API, json=data)
         result = response.json()
-        if result.get('success') and result.get('check'):
+        if result.get('success') and result.get('data.check'):
             check_data = {
-                'check': result.get('check'),
+                'check': result.get('data.check'),
                 'img_buf': img,
                 'logon': 1,
                 'type': 'D'
diff --git a/py12306/helpers/api.py b/py12306/helpers/api.py
index 304b258..1a9dc04 100644
--- a/py12306/helpers/api.py
+++ b/py12306/helpers/api.py
@@ -44,7 +44,8 @@ API_QUERY_INIT_PAGE = BASE_URL_OF_12306 + '/otn/leftTicket/init'
 API_NOTIFICATION_BY_VOICE_CODE = 'http://ali-voice.showapi.com/sendVoice?'
 API_NOTIFICATION_BY_VOICE_CODE_DINGXIN = 'http://yuyin2.market.alicloudapi.com/dx/voice_notice'
 
-API_FREE_CODE_QCR_API = 'http://60.205.200.159/api'
+# API_FREE_CODE_QCR_API = 'http://60.205.200.159/api'  # 19-03-07 接口已失效
+API_FREE_CODE_QCR_API = 'https://12306.jiedanba.cn/api/v2/getCheck'
 API_FREE_CODE_QCR_API_CHECK = 'http://check.huochepiao.360.cn/img_vcode'
 
 API_CHECK_CDN_AVAILABLE = 'https://{}/otn/dynamicJs/omseuuq'