The disclosure relates to a splicing display screen, a method for powering the same, and a display device, and the splicing display screen includes a plurality of display screens, each of which includes: a power supply, a controller and a wireless charging and discharging circuit, where the power supply is configured to power the present display screen, and to provide electric energy to the power supply in another display screen within a first distance; and the wireless charging and discharging circuit is configured to provide electric energy in another display screen to the power supply in the present display screen, to provide electric energy of the power supply in the present display screen to the power supply in another display screen.