PURPOSE: To prevent the pollution of the ambient environment, simply disassemble a roaster, and facilitate the cleaning of various portions by simply adjusting the heating power and discharging a large quantity of smoke and harmful gas near their generating source when a charcoal fire is used.

CONSTITUTION: Charcoal 36 fired in advance is stored in a cooking stove 34, blowers 22 and 22 are rotated, the outside fresh air is fed to the charcoal 36 in the cooking stove 34 via a blower duct 24, a charcoal fire is sufficiently built. The heating power of charcoal can be optionally adjusted only by using one blower 22 or adjusting the rotating speed of the blower 22 to adjust the air quantity fed into the cooking stove 34. Most of the smoke rising during the cooking is sucked into an exhaust space 28 via an exhaust gas frame 30, a cooking space or a shop can be prevented from being polluted by the rising smoke. A shielding plate 48 is arranged on handles 44 and 44, the heat of the charcoal 36 is prevented from being sucked into the exhaust gas frame 30 from below a cooked object to reduce the heating power.