A flight control method of aircrafts and a device related thereto, wherein the method comprising: receiving flight indication data in a current environment, the flight indication data comprising: flight indication data detected by other unmanned aerial vehicles or flight indication data provided by a server; and generating a flight control command according to the received flight indication data, to control the flight of aircrafts. The method and device enable storage and management of the flight indication data collected by various unmanned aerial vehicles, so that relevant flight indication data, when needed by certain aircrafts, are provided to these aircrafts, causing the aircrafts to better perform operations on the basis of these flight indication data, such as obstacle avoidance, safe route planning and search for landing location.