Abstract: Small-scale heat production via direct biomass combustion is flexible and convenient. It is suitable for the utilization of biomass which has low energy density and is decentralized distribution. In this paper, technology in small-scale biomass combustion system for heating has been summarized and the market problems of this technology in our country have been analysed. The work provides reference for the development of technology in small-scale biomass combustion system for heating in our country.