Cordyceps is considered as a traditional rare Chinese materia medica. Hepialus, as the host insect of Cordyceps, is extensively focused on the scientific research. This paper summarized progress in research on Hepialus, including host insect species, identification method and geographical distribution for Cordyceps, their biological characteristics and manual feeding and so on, to provide references for further research and raising on the host insect of Cordyceps.