Embodiments of the invention relate to the technical field of displaying technology, and provide a touch display panel and manufacture method thereof, as well as a display device, which may mitigate or avoid the problem of uniformity of displayed image caused by the difference of the transmittances between the region of the touch electrode and the region of the lead. The manufacture method for a touch display panel comprises: forming a touch electrode in an electrode region; forming a lead connected with the touch electrode in a lead region; collecting a first transmittance of the electrode region and a second transmittance of the lead region respectively; determining difference values between a preset reference value and the first transmittance as well as the preset reference value and the second transmittance respectively; setting a light shading area of the electrode region and/or the lead region based on the difference values to compensate for the first transmittance and/or the second transmittance.