为充分发挥公路承灾体普查成果在公路自然灾害监测和防治、公路灾毁保险等方面的支撑作用，基于自然灾害综合风险公路承灾体普查数据及历史灾毁数据等成果，结合气象、高边坡等影响因素，构建了公路自然灾害风险评估指标体系。以1 km为单位划分路网数据得到公路自然灾害风险评估单元；利用AHP+熵权+Topsis模型相结合的方法计算各公里路段风险指数，进而将路段自然灾害风险划分为高风险（Ⅰ级）、较高风险（Ⅱ级）、一般风险（Ⅲ级）、低风险（Ⅳ级）4个等级。以云南某区域公路网进行验证，结果表明，Ⅰ至Ⅳ级风险路段分别为62、149、634、1 898个，Ⅰ级和Ⅱ级风险路段主要分布在普通国省道，Ⅳ级风险路段主要分布在农村公路。

In order to fully leverage the supporting role of survey results of highway disaster bearing bodies in natural disaster monitoring and prevention, highway disaster insurance, and other aspects, based on the survey data of highway disaster bearing bodies and historical disaster damage data, combined with meteorological, high slope and other influence factors, we constructed a highway natural disaster risk assessment index system. We divided the road network data into natural disaster risk assessment units based on 1 km, used the combination method of AHP,entropy weight and Topsis model to calculate the risk index of each kilometer section, and divided the natural disaster risk of section into high risk(Level I), higher risk(Level II), general risk(Level III), and low risk(Level IV) four levels. We verified this method by a regional highway network in Yunnan Province. The results show that there are 62, 149, 634, and 1 898 risk sections from Level I to Level IV, respectively. Level I and Level II risk sections are mainly distributed on ordinary national and provincial roads, while Level IV risk sections are mainly distributed on rural roads.