Method for inspecting fan blades by unmanned aerial vehicle

The invention provides a method for inspecting fan blades through an unmanned aerial vehicle. The method for inspecting the fan blades by the unmanned aerial vehicle comprises the following steps that: the unmanned aerial vehicle is controlled to fly along the blades according to a set cruise path, and photograph the blades according to a set photographing frequency; the unmanned aerial vehicle is instructed to send real-time flight parameters of the unmanned aerial vehicle and photos shot in real time to a ground workstation in the flight process; if an analysis result finds that an obvious defect exists and the photos completely meet a subsequent analysis requirement, only the obvious defect needs to be marked, the normal inspection and photographing process of the unmanned aerial vehicle is not interrupted, and the unmanned aerial vehicle continues to inspect and photograph; and if the analysis result indicates that the blades have a suspected defect, the ground workstation sends an alarm instruction to th