Disclosed is a touch display device which belongs to the technical field of displays, and solves the technical problem that the existing capacitive touch screens are thick. The touch display device comprises: a sub-pixel unit array, each of the sub-pixel unit being provided a thin film transistor and a pixel electrode therein, with a first insulating layer and a second insulating layer provided between the thin film transistor and the pixel electrode; and an array of common electrodes and a plurality of address lines located between the first insulating layer and the second insulating layer, each of the common electrodes being connected to a drive circuit through an address line respectively.