Abstract: The present invention provides a secure login method, including connecting a user end to a server end via internet and accessing user end information by the server end; generating or selecting an algorithm corresponding to the user end information by the user end according to a predetermined rule; and providing a website page to the user end by the server end, and encrypting information entered into the website page by the algorithm provided via the website page and to storing the encrypted information in the user end. While the user end is re-connected to the server end and logins the server end, the website provided to the user end uses the algorithm to decrypt the encrypted information stored in the user end, and the decrypted information is entered into the website page. Accordingly, the present invention prevents hackers from stealing others' cookies, so as to secure the user's information.