A display panel includes: a display substrate having a display area and a peripheral area around the display area; a cover plate assembled with the display substrate; a reinforcement layer disposed in the peripheral area, the reinforcement layer including a plurality of first corner guards, and the first corner guards being distributed around the display area at intervals; a dam disposed in the peripheral area, the dam being of a closed loop structure around the display area, the dam having a plurality of corners, and inner walls of the corners being matched with and in contact with outer walls of the first corner guards in one-to-one correspondence; and a filling layer filled in a space enclosed by the display substrate, the cover plate, the first corner guards and the dam, the filling layer being in contact with inner walls of the first corner guards.