Unmanned aerial vehicle based fire retardant spraying method for forest fires and unmanned aerial vehicle

The invention discloses an unmanned aerial vehicle based fire retardant spraying method for forest fires and an unmanned aerial vehicle. The method comprises the following steps that an infrared temperature measurement assembly is adopted to detect a fire area, a GPS positioning assembly obtains the first position information of the fire area, and the first position information is sent to a remote console; the first wind direction information of the fire area is obtained through a wind direction sensor, and the first wind direction information is sent to the remote console; a fire retardant spraying area is determined, and the spraying area is a non-fire area around the fire area; and the remote console controls a fire retardant spraying assembly to start to spray a fire retardant to the spraying area so as to form a fire-retardant isolation band. In the technical scheme, the fire behavior is controlled by adopting the method of spraying the fire retardant through the unmanned aerial vehicle, and the personne