Disclosed are a display panel and a display screen. The display panel includes a plurality of display modules and a cabinet. The plurality of display modules are distributed in a matrix and are fixed in front of the cabinet. The cabinet is provided with two display module openings and a power supply assembly opening. A protective cover plate is installed in front of the cabinet to cover the power supply assembly opening and form a power supply assembly cavity behind the cabinet, which is configured to install a power supply assembly. Two module opening cover plates are installed behind the cabinet to cover the two display module openings in a one-to-one correspondence.