An electronic device and a user interface display method thereof are provided. The electronic device organizes a plurality of computer programs executable on the electronic device into a virtual book. Each page of the virtual book includes a user interface of one of the computer programs. The electronic device displays one of the pages as a current page so that the user interface of the current page is accessible to a user of the electronic device. The electronic device senses movement and/or pressure caused by the user and interprets the movement and/or the pressure as operating actions of the user on the virtual book. The electronic device downloads new computer programs from a download server and adds corresponding new pages into the virtual book. At lease one of the computer programs provides a service of a corporate operator of a wireless service network.