近年来,台风、地震、洪水等自然灾害频频光顾;矿难、有害气体泄漏、飞机失事、火灾等安全事故接连不断;绑架、抢劫、凶杀、校园安全等刑事和治安案件时有发生。因此建立健全城市公共安全体系是社会城市化发展的必然趋势。 In recent years, natural disasters like typhoons, earthquakes and floods have been frequented by tourists; accidents such as mining accidents, harmful gas leaks, plane crashes and fires have taken place one after another; criminal and public security cases such as kidnapping, robbery, murder and campus safety have taken place. Therefore establishing and perfecting the urban public safety system is an inevitable trend of social urbanization.