The invention discloses a method for switching a parent page and a child page and a related device. An electronic device detects an operation for switching from the parent page to the child page, theoperation is responsed. The electronic device is switched from the full-screen display parent page to a middle part which is overlapped on a first side of a display screen and displayed on a sub-page.The sub-page is controlled to gradually move toward a second side of the display screen. A part, displayed on the display screen, of the sub-page is added until the sub-page is displayed on the display screen in a full-screen mode. Therefore, in the process of switching from the parent page to the child page, the visual motion movement trahectory of a user can be shortened. A better visual effectis provided, and user experience is improved.