Biomass  fuel heating uses renewable energy sources such as wood chips, grasses, waste  disposal residues and crop fertilizer disposal residues. If wood waste is a  by-product of manufacturing, the use of wood waste as fuel in industrial wood  treatment plants is inevitable option. In Denmark and other countries with  large forest cover and a developed wood industry, thermal power plants based  on biomass have been vigorously developed. China is a large agricultural  country and there are many kinds of substances produced in agricultural and  forestry production, the output is huge. The more common ones are: plant  straw, corn cob, rice husk, sawdust, etc., and the use of biomass fuel  heating has great development potential.

　　The directions of new technologies for comprehensive utilization of biomass energy mainly include direct combustion, physicochemical conversion, biochemical conversion and development of chemical conversion methods.