Disclosed is a touch display panel, including an array substrate and a color film substrate, the array substrate includes a plurality of sub-pixels, a ratio of a long edge to a short edge of the sub-pixel is M:1, the long edge of the sub-pixel extends along the second direction and the short edge of the sub-pixel extends along a first direction, M′ is a rounding off integer of M, N color resistors are arranged on the color film substrate and corresponding to the sub-pixels, M′ and N are natural numbers greater than 1; the array substrate further includes a plurality of block-shaped common electrodes, each of the common electrodes overlaps with k*Z sub-pixels in the first direction, k is a positive integer, and Z is a least common multiple of M′ and N.