By introducing the theory of crisis cycle,this paper points out that the lack of prewarning mechanism in prodromal crisis stage,the disorder response mechanism in acute crisis stage,the narrow remedy mechanism in chronic crisis stage and the careless test mechanism in crisis resolution are problems which our emergency management mechanism is now facing.Then the paper proposes that the prewarning should be enhanced through international cooperation,the CCO (chief crisis official) should take part in the emergency management,the social crisis regulation and control should be used to provide all-sides security and the public emergency responding skills should be trained by crisis education in order to build our overall emergency management mechanism based on crisis cycle.