An apparatus for examining a flat panel display device and a method thereof is provided. The tact time for examining a glass substrate is reduced as much as possible, manufacturing costs are reduced by simplifying a product, and a foot print is reduced. The apparatus includes a base frame, a carrier carrying a glass substrate from a side to the opposite side of the base frame, an auto-probe to capture an image of the glass substrate and examining whether or not the glass substrate is inferior using captured data, and a visual inspector inclining the front side of the glass substrate forward to allow inspection of the glass substrate with the naked eye. According to the apparatus, the tact-time is shortened and the foot print is reduced.