A display screen adjustment method and apparatus, and a device are provided. A display screen includes a first display area and a second display area, a camera component is disposed under the first display area, and light transmittance of the first display area is higher than light transmittance of the second display area. The adjustment method includes: collecting present ambient illuminance on a terminal (S601); and when the ambient illuminance is lower than an ambient illuminance threshold, adjusting, based on a first ambient light adaptation adjustment curve, luminance corresponding to grayscale 255 of the first display area to first luminance, and adjusting, based on a second ambient light adaptation adjustment curve, luminance corresponding to grayscale 255 of the second display area to second luminance, where the first luminance is approximately equal to the second luminance (S602). The first ambient light adaptation adjustment curve indicates a mapping relationship between ambient illuminance and the luminance corresponding to the grayscale 255 of the first display area; and the second ambient light adaptation adjustment curve indicates a mapping relationship between ambient illuminance and the luminance corresponding to the grayscale 255 of the second display area. Ambient light adaptation adjustment curves of multiple levels are set to adjust the luminance corresponding to the grayscale 255 of the first display area and the luminance corresponding to the grayscale 255 of the second display area respectively, so that luminance of the first display area is controlled to be approximately equal to luminance of the second display area. In this way, uneven luminance of the first display area and the second display area can be avoided, and a display effect of the terminal screen can be improved.