The embodiment of the invention provides a foldable display panel and a display device. The foldable display panel comprises a first non-folding region, a folding region, a second non-folding region,a plurality of grid electrode lines, a plurality of data lines, a plurality of first data lead pins, a plurality of second data lead pins, a plurality of first data lead lines and a plurality of second data lead lines, wherein the first non-folding region, the folding region and the second non-folding region are arranged in the first direction; the first data lead pins are positioned in the firstnon-folding region; the second data lead pins are positioned in the second non-folding region; the grid electrode lines extend from the first non-folding region in the first direction, pass through the folding region and extend to the second non-folding region; the data lines also comprise first data lines and second data lines; the first data lines are electrically connected with the first data lead pins; the second data lines are electrically connected with the second data lead pins. The folding shaft of the foldable display panel is basically parallel to the data lines. The embodiment alsoprovides the foldable display panel and the display device; the arrangement positions of the data lines and the grid electrode lines are exchanged, so that the data lines cannot generate transverse bending; the data lead pins are only positioned in the non-bending region; the panel reliability is improved.