Taking ISI Web of Science thesis database as the data source of document retrieval,and biomass energy and related words as the index words,a retrieval of papers from 2000 to 2013 was conducted,and the research and development situation of international biomass energy were analyzed from aspects of quantity,region,organization,sources,subject and influence. The results show that the number of papers on biomass energy research presented the linear growth as a whole over the past years. United States,China,Germany and Canada had become the focus countries of the study of biomass energy. Environmental science and ecology,agronomy,engineering and bio-technology,etc. had become the key areas of biomass energy research. Highly cited papers in the field of biomass energy had published in Nature,Science,Chemical Reviews and so forth,which shows that biomass energy research has become an international hot spot.