Cangnan county of Zhejiang province is chosen as a sample area to establish an effective method of lightning disaster risk zoning.Monitoring data of lightning occurred in Cangnan during 2007—2011,statistics of lightning disasters and related basic information during 1996—2011 are used to analyze the characteristics of lightning disasters in Cangnan by using the method of Analytic Hierarchy Process-Grey Relational Analysis(AHP-GRA).The AHP is used to determine the weight of evaluation index,while the GRA is used to calculate the relational coefficient between different evaluation indexes.The comprehensive weighted relational coefficients are then used to derive a reliable lightning disaster risk zoning.The results show that the risk grades in descending order are very high risk zone,including Lingxi town and Longgang town; high risk zone,including Yishan town,Qianku town and Jinxiang town; medium risk zone,including Fanshan town,Mazhan town,Zaoxi town,Qiaodun town; and low risk zone,including Chixi town,Dailing town,Fengyang town.The risk zoning results in Cangnan county are verified through ArcGIS information of actual lightning disasters.The verification result shows that the AHP-GRA method is effective for lightning disaster risk zoning.This research will provide reference for the planning of lightning disaster prevention and evaluation of lightning disaster risk for major projects.