At present, with the socialist market economic system established initially in China, there was a great change not only in social structures but also in the way of people live. There was also some social contradiction during the transformation of the planned economy to the market economy, especially in state-owned enterprise reform, the demolition in urban and rural places, and the relations of the cadres and the people. At the same time, the society only had a very weak control functions.As the formation of diverse social interests, the contradictions and problems turned up during this period. The interests between different groups are more complicated than before, and the so-called "labor pains" were emerging in many social groups. So there were many mass incidents in present China which affected the social stability and harmony of the society itself. The frequent occurrence of mass incidents can be said a canonical form of the social conflicts. If we could not take this problem seriously, it will directly lead to great serious social, political and economic issues. Building a socialist harmonious society, we must coordinate different interests of the social groups, solve the most urgent issues which people concerns, and properly handle the contradictions among the people of the society. Therefore, we must prevent and properly handle mass incidents, so that we can ensure our national stability and the development of the society.In this paper, the characteristics of the society in transition, in-depth study of mass incidents in this context, to fully explore the root causes and key analysis on this basis, the role and status of the public security organs in the mass incidents, the corresponding countermeasures and suggestions. The first part is an introduction. Address the questions raised in the background and significance of the study, domestic and international literature review, a clear research, ideas and methods. The second part is the status quo analysis. The third part is a demonstration program. Public management theory, comparative analysis of solutions at home and abroad for a specific problem, put forward specific proposals to deal with the problem, the feasibility of the program, you can also empirical analysis. The fourth part is proposal and suggestions. They are given to improve ability of the public security organs to prevent and handle the mass incidents. |