Abstract: Objective To describe the characteristics of traffic injury and its economic burden,and provide basic information forprevention.Methods 18 547 persons were selected by multi-stages rando mized sampling,the information of children aged 0~6 were collected by interviewing theirparents,and the students aged 7~8 and adults aged\19 by face-to-face interview,and students aged 9~18 by self-administrated interview.Results The incidence rate of traffic injury was 2.0%,There are significant difference between male(2.5%)and female(1.5%),urban(1.8%)and rural(2.2%).Non-motorized vehicle and two-wheeled motorwere majortransportaion tools(88.2%)fortraffic injury.39.5% cases were driv ers,25.1% were riders,20.3% cases were passeng ers and 9.7% cases were pedestrians.Fourpoint seven percent injury cases drank alcohol before injury occurred.The propo rtion ratio of mild,moderate(hospitalization)and severe injury(disability)was 83.3%,15.6% and 1.0%,respectively.A fterinjury,52.0% cases disposed by themselv es orothers,29.9% cases were treated in outpatient,12.0% cases were admitted to hospital.Conclusion The traffic injury incidence rate in Guangdong was high and the burden of injury was huge.According to the incidence rate,there are 1.864 million traffic injury cases peryearin Guang dong,out of them,0.557 million need treatment in outpatient,0.224 milion need hospitalization and 19 thousand left disability,and the direct medical cost was 1.92 billion peryear.