Abstract: Objective To study the nature of necrophagous flies, their developmental cycle and seasonal variation. Methods Animal corpse was used to be baiting. Eight kinds of necrophagous flies on their developmental cycle and the pattern of seasonal variation were analyzed. Results The community of necrophagous flies at high temperature in summer were more abundant than at low temperature in winter. Eight necrophagous flies through longer time at high temperature during every state than at low temperature. Conclusion  The life cycle and seasonal variation pattern of necrophagous flies could be used to estimate the time of death in practical cases.

Key words: forensic medicine, entomology, necrophagous flies, postmortem interval