The invention discloses a router upgrade method. The router upgrade method comprises the following steps: S10, when it is detected that a router has a new upgrade version, downloading a data packet of the new upgrade version; S20, obtaining version reference information of the new upgrade version according to the data packet of the new upgrade version; S30, modifying a management page file link in the data packet according to the version reference information; and S50, reloading the modified management page file link, and logging in the updated management page of the router. According to the router upgrade method disclosed by the invention, the management page file link is modified according to the version reference information; and when logging in the management page of the router, the modified management page file link is called to avoid the problems of display confusion and the like in the modified page and the cached management page file after the router is upgraded.