Abstract: To explore a new way for fast biomass liquefaction in atmospheric pressure condition, the paper focused on the basis of dielectric barrier discharge plasma techniques. Liquefied experiments on some familiar biomass such as sawdust, stalk and rice hull, were performed on condition of low temperature and atmospheric pressure. Results of experiments showed that the method had a series of merits including fast chemical reaction，facile reaction condition, simple equipments, steady outcome composition and low causticity. It would be one of investigative directions for biomass liquefaction in the future.