To provide a firewood burner easily performing both of adjustment of fire power and management of a temperature, obtaining high combustion efficiency, automated over all aspects of continuation of burning and fire extinction as needed, and utilized in safe in many ways at low costs.

This firewood burner has a main body portion, a hearth portion, and a firewood supply means to the hearth portion, the firewood supply means has a firewood stocker and a firewood charging machine, the firewood stocker receives firewood inside, and comprising a plurality of stocker cylinders arranged in parallel with each other and opened at one end, and a driving device for successively rotating the stocker cylinders to a prescribed position, the firewood charging machine is opposed to opening ends of the stocker cylinders at one opening end, the other opening end is composed of a hollow body facing an opening portion formed on an upper opening portion of a fireproof container or a fireproof container sidewall, and the stocker cylinders are successively rotated to the prescribed position by the driving device, so that the firewood is successively charged into the fireproof container as needed.