Metarhizium anisopliaewhich belongs to Deuteromycotina is an entomogenous dissolving fungi.The encroach process includes conglutination,spore germination,penetration,growth and hostdeath.This is the integrated effect of appressorium,cuticle-degrading enzyemes and destruxin.It has many virtues,i.e.,the wide range of its host,innocuity for human being and domestic animal and crop,easy production and long aftereffect.So it has broad application.