The UAV (Unmaned Air Vehicle) aerial photography is a combination of UAV technology and photography, and a UAV remote sensing technology realizing through the integration of aircraft technology, communication technology, and GPS differential positioning and image technology. Multirotor UAVs have many advantages, such as lowcost, flexibility, high security, and enabling the detection of highrisk areas. Its maximum flight speed is 60 km/h, maximum climb speed is 60 km/h, and maximum flying height is 3 km. It can easily mount microcamera or SLR camera to perform observation mission. In this study, the UAV aerial photography is applied to lightning protection. After actual testing, it is found that some difficult problems in lightning protection that are unable to complete manually can be solved through the use of UAV aerial photography technology, including the external lightning protection system checking for towers and sloping roof constructions，the investigation of lightning disasters, and the estimation of the sizes of the building structures. The inspection efficiency of lightning protection device in largescale building groups can be greatly improved by UAV applications. It has good prospects in lightning protection and Lightning disaster investigation.