The invention relates to an unmanned aerial vehicle (UAV) control method and a UAV control device. The method comprises the steps as follows: when a UAV is in a first flight state, acquiring meteorological data of the current location of the UAV, wherein the first flight state is a state showing that the UAV is flying stably or is about to take off; determining the current dangerous flight level of the UAV according to the acquired meteorological data, wherein the dangerous flight level represents the level of danger caused by different weather conditions to the flight of the UAV; and if the dangerous flight level is a first preset level, switching the UAV to a second flight state, wherein the first preset level is a level at which the UAV is unable to fly safely, and the second flight state is a state showing that the UAV flies under emergency or stops flying. According to the technical scheme, a UAV can acquire meteorological data automatically and in real time and perform emergency treatment, so physical damage to the UAV caused by dangerous weather is avoided.