A touch display device including a display module and a cover arranged above the display module is disclosed. The cover includes a plate body and a side plate extending from lateral ends of the plate body toward the display module. The side plate of the cover is bonded with the display module. A vacuum is formed between the cover and the display module. The side plate is formed in a rim of the plate body of the cover. The lateral surfaces of the side plate are bonded with the lateral surfaces of the display module to form the vacuum between the cover and the display module. As such, it is not needed to use the transparent optical glue between the cover and the display module. The display module is prevented from being damaged when the touch display device needs rework or repair, which contributes to the rework or repair.