Mountain torrent disaster dangerous area risk grading method and system

The invention relates to a mountain torrent disaster dangerous area risk grading method and system. The method comprises the following steps: acquiring basic information of a mountain torrent disaster dangerous area; acquiring risk items of the mountain torrent disaster dangerous area; configuring risk evaluation indexes for the risk items based on the basic information; obtaining the weight of the risk item and the weight of the risk evaluation index; calculating a risk level parameter of the risk item corresponding to the mountain torrent disaster dangerous area based on the weight; and obtaining the risk level of the mountain torrent disaster dangerous area based on the risk level parameter. The mountain torrent disaster danger area management method and system have the effect of conveniently performing zoning planning and management on the mountain torrent disaster danger area. 本申请涉及一种山洪灾害危险区风险等级划分方法及系统，其方法包括以下步骤：获取山洪灾害危险区的基本信息；获取所述山洪灾害危险区的风险项；基于所述基本信息为所述风险项配置风险评价指标；获取所述风险项以及所述风险评价指标的权重；基于所述权重计算所述山洪灾害危险区对