The present application discloses a touch display panel and a touch display device. An embodiment of the touch display panel includes: a first touch electrode array, comprising M first touch electrodes including 1st to Mth first touch electrodes, arranged along a first direction; and a second touch electrode array, comprising N second touch electrodes; each of the first touch electrodes comprising a first connection portion extending along the second direction, and each of the 2nd to Mth first touch electrodes further comprising a plurality of first electrode blocks; and an orthographic projection of each of the first electrode blocks on the second touch electrode array at least partially overlapping at least two second touch electrodes. The embodiment has improved touch detection accuracy.