Abstract: Biomass pyrolysis is an important way to realize the energy utilization of biomass, and it is of great significance to solve the increasingly serious energy problems. This paper focused on the research status of several typical biomass pyrolysis reactors, and listed several new pyrolysis reactors which were recently developed, and the working principle, advantages and disadvantages of different types of pyrolysis reactors were summarized. The catalytic pyrolysis technology and biomass raw material pretreatment technology were reviewed. It was concluded that the research on the development of new high-efficiency, high-activity pyrolysis catalysts and the basic theory of raw material pretreatment technology were the future research directions of bio-pyrolysis.