Objective To study regular injury of body in traffic accident concerned with bicycle and judge the manner in which the injured or dead takes. Method The injury of the injured and dead in 958 traffic accident cases concerned with bicycle occurred in Beijing area from 1997 to 2002 was analyzed statistically. Results There are different injury characters in crotch and both lower limbs between the injury of the bicycle-riding and injury of the bicycle-pushing in traffic accident. Conclusion The traffic manner of the injury and dead can be judged in traffic accident cases concerned with bicycle according to the forensic medical examination.