A display panel and a display device are provided. The display panel includes a substrate, a first metal layer disposed on a side of the substrate, a second metal layer disposed on a side of the first metal layer away from the substrate and including a plurality of gate electrodes and a plurality of sets of source and drain electrodes arranged in the same layer as the gate electrodes, and a plurality of data lines. Each of the data lines is disposed in the same layer as the first metal layer and is electrically connected to the source and drain electrodes.