The technology of swirling combustion and a new kind of wood briquette fuel swirling burner were proposed to improve thermal efficiency and reduce pollution emissions of the wood briquette heating stove. Numerical simulation on combustion processing of different excess air coefficient and different inclination between the secondary air inlet and grate wall in the heating stove was considered, aiming to solve the velocity, temperature and concentration field. The results reveal that high temperature backflow zone coming out through rotational flow secondary wind effectively strengthened combustion and improved the furnace using area; combustion efficiency is the highest and pollution is the lowest, when excess air coefficient is 1.5 and inclination angle is 30°.