The biomass boiler is composed of the heating surface of the body and the grate. The fuel completes the combustion process on the grate, and the burning flue gas washes and exchanges heat on the heating surface of the body, heating the water in the pipeline, thus producing hot water or steam. ZOZEN Boiler makes research on different biomass fuels and optimizes the structure of the furnace, furnace arch and furnace door to solve the common problems such as frequent boiler shutdown and ash removal, and furnace arch collapse.