To surely and efficiently perform collection of residual heat, air-heating of another place, hot water supply, and the like with a heat exchanging mechanism provided in a wood stove having a secondary combustion mechanism.

This wood stove device, having an air supply opening 14 for secondary combustion on an upper part in a combustion chamber 11, further includes: a lower water chamber section 2 which occupies the whole bottom surface in the combustion chamber and of which a top face is a fire bed; an upper water chamber section (upper water chamber 31) disposed in a range occupying most of a part excluding a chimney section at an upper part of the combustion chamber, and including a bypass pipe 61 for heat exchange inside; and a communication water chamber section 4 communicating the lower water chamber section and the upper water chamber section at a position out of the air supply opening for the secondary combustion.