A touch display device including a first substrate, a second substrate, and a display medium is provided. The first substrate includes a plurality of pixel units, a first touch electrode, and a plurality of first connection lines. The pixel units are arranged in an array. The first touch electrode corresponds to at least one pixel unit. The first connection lines are extended along a first direction and coupled between the first touch electrode and a touch integrated circuit. The display medium is disposed between the first and second substrates.