The command and dispatch center has a visual dispatch platform, which returns flight data in real time. Through route planning, the command and dispatch center can coordinate multiple unmanned aerial vehicles to take off in an orderly manner at the same time. When the unmanned aerial vehicle is short of electricity, the hangar provides battery replacement and charging requirements to ensure the endurance time of the unmanned aerial vehicle. When the unmanned aerial vehicle fails, the dispatch center can remotely manage the forced landing.