中文摘要：

外来入侵动物给我国的生物多样性、国民经济以及人类的健康带来了严重危害，正确分析外来人侵动物的扩散风险对控制其在国内的扩散有着极其重要的意义。采用层次分析法，建立了外来动物扩散的风险评估指标体系，并选取食人鲳（Pygocentrusnattereri）、桔小实蝇（BactroceradorsalisHendel）等几种典型的外来入侵动物作为评估对象，通过扩散风险计算模型评估出扩散风险的大小，设置阈值对不同入侵动物的扩散风险进行了分级，最终将外来人侵动物的风险分为4个等级：极高风险、高风险、中风险以及低风险，并针对不同风险等级不同扩散程度的外来动物提出了相应的分级管理对策，以期提高政府管理外来入侵动物扩散的效率。

英文摘要：

The invasion of alien animal has caused serious impacts to biodiversity, economy, and human health in China. Assessing correctly the spreading risk of invasive animals is significant for controlling them. On the basis of the analytic hierarchy process, this article set up a risk evaluation index system of the invasive animals proliferates among various provinces in China,and some typical animals,like Pygocentrus nattereri and Bactrocera dorsalis etc,were assessed and established a spread risk calculation model to calculate the spread risk, through setting up threshold to classify the spread risk of different animals into four degrees. Extremely high risk, High risk, Moderate risk, and Low risk. In the end, corresponding policy sug- gestions to each rank,in order to improve management efficiency for government were raised.