By comparing the morphological characteristics and ascosporal development among Cordyceps sinensis(Berk.) Sacc.from Srom Nepal,Bhutan and different districts in China and Cordyceps multiaxialis M.Zang N.Kinjo,Cordyceps nepalensis M.Zang N.Kinjo,Cordyceps gansuensis Zhang,Wang et Yan and Cordyceps crassispora Zang,Yang et Li, the conclusion is that Cordyceps multiaxialis? C.nepalensisare the synosym of Cordyceps sinensis, andCordyceps gansuensis and Cordyceps crassispora are also probably the synosym of C.sinensis.