Touch display panel and display device

The invention provides a touch display panel and a display device. The touch display panel comprises a display substrate and a touch substrate, the display substrate comprises a plurality of sub-pixels which are regularly arranged, the touch substrate comprises a plurality of touch electrodes, at least one touch electrode comprises a touch dense area and a touch sparse area, the touch sparse area is located on at least one side, close to the adjacent touch electrodes, of the touch dense area, and the sub-pixels are arranged on the display substrate. The number of the sub-pixels contained in an area defined by at least one touch grid in the touch dense area is smaller than the number of the sub-pixels contained in an area defined by at least one touch grid in the touch sparse area. According to the touch electrode, the touch dense area and the touch sparse area are arranged in the touch electrode, and the number of the sub-pixels contained in the touch grids in the touch dense area is smaller than that of the