This paper analyzes the reasons that affect the road safety in Beijing from three aspects: motor vehicles, non-motor vehicles (represented by bicycle) and pedestrians. In view of the above problems, this paper puts forward corresponding improvement points. First, the relevant departments should improve laws and regulations to regulate people's behavior. Second, Increasing the number of the bicycle path is the first and most important step for solving bicycle safety problem. Finally, it is suggested to provide safety and awareness training with extra maintenance courses and road safety measures for motor vehicle drivers and cyclists. The article points out when accidents reduced to a certain extent, Laws revision and regulations has little effects and the lack of awareness about traffic safety is an underlying cause.