The invention discloses a display screen and a display device. The display screen comprises a display area and a non-display area, wherein the display area comprises a first opening area, and the non-display area comprises a first non-display area and a second non-display area; the second non-display area is embedded into the first opening area; the first non-display area surrounds the display area, and the first non-display area surrounds the second non-display area; the display screen comprises a front-arranged sensor, a first substrate and a second substrate; the first substrate covers the display area, the first non-display area and the second non-display area, and the second substrate covers the display area, the first non-display area and the second non-display area; the front-arranged sensor is arranged in the second non-display area; light is transmitted in the position corresponding to the second non-display area of the first substrate and the position corresponding to the second non-display area of the second substrate separately. According to the technical scheme, the screen-to-body ratio of the display screen is increased; meanwhile, the front-arranged sensor can be arranged in the display screen, and thus corresponding additional functions are achieved.