Provided are a display panel and a display device. The display panel includes: a base substrate, including a display region and a peripheral region, the peripheral region being located on at least one side of the display region; a plurality of sub-pixels, located in the display region; a plurality of constant voltage lines, arranged in a first direction, each of the plurality of constant voltage lines extending in a second direction, the constant voltage line being at least partially located in the display region, and the first direction intersecting with the second direction; and a conductive line, located in the peripheral region, and connected with the plurality of constant voltage lines, the plurality of constant voltage lines being configured to provide a constant voltage to the plurality of sub-pixels.