diff --git a/DrissionPage/drission.py b/DrissionPage/drission.py
index 88dde3e..01eb81d 100644
--- a/DrissionPage/drission.py
+++ b/DrissionPage/drission.py
@@ -227,6 +227,11 @@ class Drission(object):
                     self.driver.get(cookie_domain if cookie_domain.startswith('http://')
                                     else f'http://{cookie_domain}')
 
+                # 避免selenium自动添加.后无法正确覆盖已有cookie
+                c = self.driver.get_cookie(cookie['name'])
+                if c and c['domain'] == cookie['domain']:
+                    self.driver.delete_cookie(cookie['name'])
+
                 self.driver.add_cookie(cookie)
 
     def _set_session(self, data: dict) -> None: