Unmanned aerial vehicle system capable of automatically replacing actuator module and provided with acoustic optical communication relay

The invention discloses an unmanned aerial vehicle system capable of automatically replacing an actuator module and having an acoustic optical communication relay, and relates to the technical field of unmanned aerial vehicles, and the unmanned aerial vehicle system comprises an unmanned aerial vehicle, an actuator module replacing device and an unmanned aerial vehicle control end. Different carrying devices are connected with an electric power and signal interface and the unmanned aerial vehicle in a universal mechanical fixing mode, and the unmanned aerial vehicle performs large-range operation such as facility patrol, safety patrol and enemy search in a no-load state, namely in a state of not mounting an actuator module, so that energy consumption is reduced, the voyage of the unmanned aerial vehicle can be improved, and the unmanned aerial vehicle is more convenient to use. By deploying a plurality of actuator module replacers networked in a wired or wireless mode, the unmanned aerial vehicle can complete