Abstract: Stampede accidents are one kind of mass disaster that may cause heavy casualties and usually occurs at mass gathering events. Once a stampede accident occurs, it is difficult to stop panic spreading and to rescue the injured. Therefore, prevention and disaster preparation play a central role in reducing group casualties. In order to help promote a basic understanding of this mass disaster, this paper analyzes the psychosocial characteristics of crowds which may easily give rise to stampede accidents, summarizes relevant risk factors and put forward suggestions regarding these risk factors. The real-time monitoring and control of the density and movement of crowds are crucial points in preventing stampede accidents. A detailed emergency response plan as well as supporting facilities shall be made available for mass gathering events so as to stop contingencies from becoming stampede accidents.