The embodiment of the invention provides an image projecting method based on an aircraft, an image projecting device based on the aircraft and the aircraft, wherein the method comprises the following steps of if an image projecting event on the aircraft is detected, regulating the position of the aircraft to a projectable position; and triggering an aircraft projecting module to project an image, wherein the step of regulating the position of the aircraft includes the process of regulating the position of the aircraft according to an image of an obstacle obtained in the projecting direction of the projecting module. When the method and the device are used, the aircraft can be combined with the projecting module such as a projector; the projecting position can be fast changed according to requirements only by controlling the flight of the aircraft; and the fast, convenient and flexible image projection is realized.