Group events occur frequently in the period of social transition,which challenge social stability and governments' legitimacy.Effectively dealing with the group events is an important duty of the related departments of local governments.Only establishing and improving a series of institutional long-term mechanism including social crisis early-warning system,group right and interest articulation system,information communication and feedback system,social discontent channelization system and local officials accountability system,can group events be in lawful and systematic framework to be solved