A gas cooker that includes a case defining an interior area, the case including an opening to the interior area; a plate covering, fully or in part, the opening of the case; a burner that is located in the interior area of the case, wherein the burner includes a heating element that is heated using gas; a vent that is located at a first position of the case and that is configured to discharge burned gas from the interior area of the case to an exterior of the case; an insulating case that is coupled to the burner and that is configured to hold the burner; and a first insulator that is coupled between the insulating case and the plate and that is configured to seal an interior space of the burner is disclosed.