To achieve the stable operation for a long time by smoothly supplying pellets and preventing the fixing of combustion residue to a combustion plate.

A combustion chamber 18 of a pellet stove 10 comprises a rotatable blade 50 and a combustion case 20 including the combustion plate having an ash outlet for combustion residue and the like. A rear main body 10B has a pellet supply device 120 for supplying the pellets to the combustion case 20. A rotating body 130 having a reservoir groove 132 on its surface is accommodated inside of the pellet supply device 120, and two adjustment plates 140, 144 are mounted near an inlet of an upper face. The amount of pellets is adjusted approximately constant to be accommodated in the reservoir groove 132 by rotating the rotating body 130 and rubbing the pellets by the adjusting plates 140, 144. The combustion residue is crushed by rotating the blade 50 in the combustion case 20, and the crushed matter and ash are automatically discharged from the ash outlet.