To widely utilize bio-oils as fuel,fast pyrolysis for the production of biomass oils from typical biomass feedstocks such as birch chip,corn straw and rice husk was implemented by adopting a bubbling fluidized bed with discontinuous feed,and then biomass oils and the emulsion oil mixed from bio-oil and diesel oil were analyzed.Results indicate that the bio-oil production efficiency of wood is higher than that of herbaceous species,the heating value of biomass oils is 16-18 MJ/kg.The oils are multicomponent mixtures comprising various groups of organic compounds,in which acids,phenolics,furans,alcoholic aldehydes and hydrocarbons are the main components.Considering that it is difficult to utilize bio-oils directly,the emulsion oil proportions and physical chemistry characteristics were studied for emulsion oil production.The result shows that properties of emulsion oil are more stable than those of bio-oil and diesel oil,and the emulsion method is simple and feasible.