The present invention relates to a firewood stove which comprises a plurality of circulation chambers in an inner space of a wall of the firewood stove and allows combustion gas of a combustion chamber to circulate the circulation chamber and to be discharged from the circulation chamber, so that the combustion gas produced in the combustion chamber passes through a sufficient convective circulation process while passing through the plurality of circulation chambers, and thus the combustion gas is not directly discharged from a discharge pipe, the firewood stove may preserve heat energy of the combustion chamber more efficiently and maintain a higher heating efficiency by minimizing heat energy loss.COPYRIGHT KIPO 2016