Risk factors of traffic accident were determined in this study: - Age of victims is between 15 to 35 - Accident mosly happened from 18 to 23 PM - Motorcycles is the main vehicle causing accident - Alcohol drunk is the major cause factor - A large percentage of walkers was involved - High speed driving and traffic law violation are the main factors to increase the traffic accident And this study also detemined the hot spots of traffic accident in HCMC.