突发事件是指突然发生,造成或可能造成重大人员伤亡、财产损失、生态环境破坏,甚至危及公共安全的紧急事件,分为自然灾难、事故灾难、公共卫生事件和社会安全事件4大类。近年来,大规模自然灾害、有预谋的恐怖袭击、突发性政治事件等公共危机事件在全球呈高发态势,成为影响各国社会稳定的制约性因素。在一些西方国家,如何更好地应对突发事件,建立健全科学的突发事件预警、处置机制,成为政府和各类民 Emergency refers to sudden emergencies that cause or may cause heavy casualties, property damage, ecological damage, or even endanger public safety emergencies, divided into four categories: natural disaster, accident disaster, public health incident and social security incident. In recent years, public crises such as large-scale natural disasters, premeditated terrorist attacks and sudden political incidents have been taking a high profile in the world and have become the restrictive factors that affect the social stability of all countries. In some western countries, how to deal with emergencies better, establish and improve a scientific early warning and disposal mechanism for emergencies, and become a government and various people