A touch display device includes a plurality of touch electrodes that are arranged outside or inside a display panel and a touch sensing circuit that outputs a touch driving signal to drive at least one of the plurality of touch electrodes and senses a touch or a touch position, the touch driving signal output in each touch section for the touch mode includes a plurality of waveforms to which a rectangular wave is modulated, and each of the plurality of waveforms includes one or more different amplitudes in a rising section and a falling section. Accordingly, it is possible to prevent electromagnetic interference (EMI).