A touch display panel includes: a plurality of electrode blocks arranged in an array and spaced apart in an active area; an inner common electrode line surrounding the active area and disposed in a non-active area, a spacing area being provided between the active area and a portion of the inner common electrode line located away from a side where a driving circuit area is located; a plurality of dummy touch driving electrode lines arranged in parallel and running through the active area, the plurality of dummy touch driving electrode lines arranged in parallel being in one-to-one correspondence with and electrically connected to at least electrode blocks close to the spacing area; and switch circuits disposed in the spacing area that are in one-to-one correspondence with the electrode blocks electrically connected to the dummy touch driving electrode lines.