Abstract: Objective To analyze epidemiological characteristics of road traffic accidents that resulted in injuries in Chengdu area,to find out the cause and to provide scientific a base for accident prevention.Methods Appraisal data of the injured in road traffic accident from January 2003 to October 2006 were re-examined.Detailed statistics were made which include gender,age,transportation mode,person types,the accident date and day,and location.Results Six thousand three hundred and sixty four cases involving road traffic accident were analyzed.Among the injured,male to female ratio was 1.84:1,and the age group of 18-50 were the largest proportion(66.34%).Bicyclists,motorcyclists and pedestrians made up 80.90% of the injured persons.Different age groups,different genders and those who were injured in different regions varied greatly in terms of transport modes they employed.In terms of injured parts,lower limb injury took up the highest proportion(39.49%),with cranium & cerebrum ranking second(22.77%).Conclusion Different approaches and measures shall be taken in regard to different age groups,different regions,different times and different transport modes,and corresponding policies shall be adopted.

Key words: road traffic accident, impairment, accident prevention, epidemiological research