Inspection device of power network line

The invention relates to an inspection device of a power network line. An image acquisition device is arranged on an unmanned aerial vehicle and is used for acquiring an image of a power network line to be detected to obtain image information of the power network line to be detected; the image information of the power network line to be detected is transmitted to a data management server; the data management server is used for acquiring a fault detection result of the power network line according to the image information of the power network line to be detected; the inspection carried out by people through walking can be effectively replaced, the inspection of the unmanned aerial vehicle is realized and the inspection efficiency is improved. The image information of the power network line to be detected, the fault detection result and corresponding information of the unmanned aerial vehicle are stored and managed through a data storage server, and maintenance personnel can check content stored in the data storage server, so that the maintenance personnel can conveniently check.