A cooker is mounted on a combustion type heating device used as a heat source for the cooker, and has a combustion gas distribution chamber formed in the space between double walls formed by stacking a dish-shaped cooker support unit and a combustion gas distribution unit in a sequence from below and coupling the two units with each other. The combustion gas distribution unit or the cooker support unit and a cooking chamber lid unit are stacked and coupled with each other on a cooking chamber. Combustion gas flue ports between the combustion gas distribution chamber and the cooking chamber and combustion gas outlet ports between the cooking chamber and an outer surface of the cooker are arranged alternately with each other along a bottom edge of the cooking chamber, such that the flow of the combustion gas which has passed through the combustion gas flue ports and introduced into the cooking chamber and the flow of air being discharged from the cooking chamber to the outside of the cooking chamber may not collide against each other and a smooth flow of air may be achieved. The center of the cooking chamber may be fully used as a cooking space, and both direct heating type cooking and indirect heating type cooking are possible.
