The entomophthoroid fungi are important members in lower fungi,including more than 280 species,and mostly obligate arthropod parasites with the exception of few members occurring saprotrophically in soil and plant debris.Based on the taxonomic framework of entomophthoroid fungi by Humber,a taxonomic outline of entomophthoroid fungi was updated in combination with recently published taxonomic taxa.The taxonomic characteristics of one phylum,three classes,three orders,ten families and twenty-five genera were presented.The problems and prospects in the taxonomic study of entomophthoroid fungi were put forward.