The disclosure discloses a display panel, a method for displaying on the same, and a display device, where a display region is divided into a central display region, and an edge display region surrounding the central display region; and the brightness of a pixel in the edge display region is lower than the brightness of a pixel in the central display region at each grayscale, so that while a picture is being displayed, the brightness in the edge display region is lower than the brightness in the central display region, but the edge display region is adjacent to an edge frame of the display panel, and human eyes perceive higher brightness in the edge display region than the real brightness in the edge display region, so that the brightness in the central display region perceived by the human eyes agrees with the brightness in the edge display region.