Strain B37 of Bacillus subtilis was the best biocontrol bacterium on poplar sapstain (C. adiposa Hz91, L. theobromae YM0737, L. theobromae Fx46, and Fusarium sp., YM05) of the 13 bacteria in our work. It was isolated fromnormal leaf of Pinus thunbergii.These observations agree with Feio et al.