【Objective】Highly virulent strains of Beauveria bassiana were screened out, in order to provide excellent strain resource for controlling Dendrolimus punctatus in field. 【Method】The dead insect and soil were collected from different woodlands in China, and Beauveria strains were isolated by tissue isolation and gradient dilution method, respectively. Based on morphological observation and ITS sequence analysis, species of all Beauveria strains were identified. And then virulence of Beauveria strains was tes...