当人类把一个世纪的文明接受下来发现，２０世纪人类遇到的不幸是前所未有的。回顾为前瞻，知往为开来。由于人口与生产力向城市集中，防灾减灾形势将愈加严峻。中国城市灾害现状及典型灾害分类一般城市典型灾害类型主要可归纳为：公害、交通、水害、火灾、地震、高新技术... When mankind accepted the civilization of a century, he found that the misfortune encountered by mankind in the 20th century was unprecedented. Review for the forward looking, knowing for the future. Due to the concentration of population and productive forces in the cities, the situation of disaster prevention and reduction will become more and more severe. The status quo of urban disasters in China and the typical disaster classification Typical disaster types in general cities can be summarized as: pollution, traffic, water damage, fire, earthquake, high-tech ...