Strains of Hirsutella sinensis Liu, Guo, Yu & Zeng were isolated from several fruits of Cordyceps sinensis (Berk.) Sacc. collected in Yunnan Deqin Bai Ma Snow Mountain by amended methods. The process of ascospores microcycle conidiation was illustrated and was taken as an evidence for determining our isolates as the anamorph of Cordyceps sinensis (Berk.) Sacc.