Abstract: The sudden mass incidents in ethnic regions have plural characteristics:ethnic complexity of participation subjects and the demands of interests,and the key to a successful response lies in timely and clear classification of the incidents：ethnic mass incidents or non ethnic mass incidents,and determining the nature of the incidents accurately,which requires a standardized and institutionalized prevention and handling system as a guarantee.The current traditional “campaign-style governance” often causes the government in ethnic regions into a passive state in the process of coping incidents.Therefore,it is essential to construct a set of institutionalized and dynamic prevention system exclusive to the management of sudden mass incidents in ethnic regions.Mechanisms of dealing with the aftermath and early warning systems which are suitable for the management of the sudden mass incidents in ethnic regions are vital to resolve the crises exist in ethnic areas objectively and realistically.

Key words: ethnic regions, sudden mass incidents, system construction