The technology of biomass-syngas production from biomass and the technology of synthetic liquid fuels from biomass-syngas at home and abroad were introduced.Biomass gasification technology was developed in early research,but biomass was difficult to collect,so the development of biomass gasification technology was restricted.In recent years,the two-step biomass gasification technology was developed both at home and abroad.This technology is used to transform biomass into fast pyrolysis oil(bio-oil) with high energy density.The bio-oil collected can be used to produce biomass-syngas.The technology can reduce the cost of the entire system,and it will be the industrial technology of synthetic liquid fuel from biomass in the future.