A method for adjusting brightness of a display screen includes: in response to a brightness adjustment trigger operation, determining a target brightness level of the display screen based on a current brightness level of the display screen; obtaining a corresponding physical brightness and a corresponding display coefficient based on the target brightness level, wherein the display coefficient is smaller than 1, and the physical brightness is included in a physical brightness range in high brightness mode of the display screen; and controlling the display screen to display at a target display brightness based on the obtained physical brightness and the obtained display coefficient.