The invention provides a method and device for processing cookie information. The method comprises the steps that when any account logs in to the website for the first time, mapping among an account name, the website and the cookie information is established and is stored in an isolating mode; when any account logs in to the website not for the first time, the triggering order of the cookie information is received and read, and the web site of the website to which the account logs in and the currently used account name are obtained; by means of the pre-stored mapping relation, the corresponding cookie information is searched for and read according to the web site and/or the account name; the cookie information corresponding to the accounts is sent to a server, and all accounts can log in to the website. By means of the method and device, a user can automatically log in to the same web site through different accounts, the user with a plurality of accounts can log in to the website more easily and conveniently, and the user experience can be improved.