A touch display device including a display module and a touch module is provided. The touch module is disposed above the display module and includes a transparent cover, a touch electrode layer and a phase retardation protection layer. The display module is configured to provide an image light. The touch-sensing layer is disposed on the transparent cover and between the display module and the transparent cover. The phase retardation protection layer covers the touch-sensing layer. A polarization direction of the image light provided by the display module is changed after passing through the phase retardation protection layer. A touch display device including a phase retardation planarization layer is also provided.