Embodiments of the present invention relate to the technical field of unmanned aerial vehicles (UAV), and specifically discloses an automatic return method, device and UAV. By means of the foregoing technical solutions, the embodiments of the present invention can estimate a minimum power consumption required for the UAV to return from the current position to the return point in a more accurate way, so as to avoid forced landing of the UAV due to an excessively low battery level during a flight or a return.