To provide an upper sucking roaster to efficiently suck rising exhaust gas.

Almost upward blowout holes 17, 17a... are penetratingly arranged in a top ring to block up the upper part of a supply passage, the air supply part is made to communicate with the supply passage, a smoke gathering cylinder which has a smoke gathering hood 36 and can take the sucking action is arranged above the cooking part, and the pointing direction of the blowout holes 17, 17a... is set outside of the smoke gathering good 36. Therefore, suction is limited only to exhaust gas W to the possible minimum level without sucking blowout air M to form an air curtain by the smoke gathering hood 36 by straightly raising the exhaust gas W toward the smoke gathering hood 36 by cutting off a surrounding air flow and a rising flow of the exhaust gas W by the air curtain by the blowout air M from the blowout holes 17, 17a....