Abstract: Provided is a grill apparatus having a foldable heat generating unit and a grill unit, in which a plurality of heat sources are folded on each other or unfolded from each other, to radiate heat downward from the plurality of heat sources, and cook food through the plurality of heat sources, thereby controlling the amount and the time of cooking the food according to user's necessity by folding or unfolding the plurality of heat sources on each other or from each other. The grill apparatus includes: the foldable grill unit on which a food is put and cooked, in which a plurality of grill plates can be mutually unfolded or folded; and the foldable heat generating unit disposed on a support pillar disposed vertically from the grill unit and in which a plurality of heaters can be mutually unfolded or folded while applying infrared rays to the grill unit.