A method includes: in response to a dual-screen display instruction, entering a dual-screen display phase; in the dual-screen display phase, controlling a first display interface to be switched between a first display screen and a first display sub-screen in a time-division manner; and when the first display interface is switched to the first display screen, transmitting data of a first image to the first display screen through the first display interface, or when the first display interface is switched to the first display sub-screen, transmitting data of a second image to the first display sub-screen through the first display interface, so that the first display sub-screen displays the second image at the same time when the first display screen displays the first image.