672 specimens of entomogenous fungi belonging to 20 species, 8 genera and 4 families were collected from 20 sampling quadrates in the Langya Mountains Nature Reserve of East Anhui. The dominant species were Beauveria bassiana, Paecilomyces farinosus, P. cateinannulatus, B. brongniartii and P. fumosoroseus, and B. bassiana was most dominant, with the relative abundance of 73.8%. The entomogenous fungi in the Reserve were high in amount but low in diversity. The amount of isolates and the abundance of each species were the highest in summer and decreased with decreasing air temperature and rainfall, while the Pielou evenness changed from relatively low to relatively high. Paecilomyces spp. had a less seasonal fluctuation of quantity than Beauveria spp.