The present application discloses a display panel and a display device. The display panel is divided into a display area and a non-display area. The non-display area is located at a periphery of the display area. A retaining wall structure configured to block an alignment liquid is disposed between the display area and the non-display area, and the retaining wall structure surrounds the display area and is connected end to end; the non-display area of the display panel includes a fan-out area, and the retaining wall structure includes a metal layer. The metal layer of the retaining wall structure and a metal layer of the fan-out area are formed at different layers.