An aircraft hovering work support system mounted on an aircraft capable of hovering, the aircraft hovering work support system comprising: a detecting portion configured to detect a target object which is located outside an airframe of the aircraft and may become an obstacle during hovering of the aircraft; a data processing portion configured to process data acquired from at least one of the detecting portion and an avionics system of the aircraft; and a display portion, wherein: the data processing portion generates target object schematic image data by using detected data acquired from the detecting portion and avionics data acquired from the avionics system and outputs the target object schematic image data to the display portion, the target object schematic image data indicating approach of the target object to the aircraft or possibility of the approach of the target object to the aircraft; and based on the target object schematic image data, the display portion displays an obstacle state display image schematically showing a state of the obstacle around the aircraft, characterized in that the data processing portion generates the target object schematic image data when the number of times of detection of the detected data of a same region or a same target is a preset determination threshold or more. a detecting portion configured to detect a target object which is located outside an airframe of the aircraft and may become an obstacle during hovering of the aircraft; a data processing portion configured to process data acquired from at least one of the detecting portion and an avionics system of the aircraft; and a display portion, wherein: the data processing portion generates target object schematic image data by using detected data acquired from the detecting portion and avionics data acquired from the avionics system and outputs the target object schematic image data to the display portion, the target object schematic image data indicating approach of the target object to the aircraft or possibility of the approach of the target object to the aircraft; and based on the target object schematic image data, the display portion displays an obstacle state display image schematically showing a state of the obstacle around the aircraft, characterized in that the data processing portion generates the target object schematic image data when the number of times of detection of the detected data of a same region or a same target is a preset determination threshold or more. the data processing portion generates target object schematic image data by using detected data acquired from the detecting portion and avionics data acquired from the avionics system and outputs the target object schematic image data to the display portion, the target object schematic image data indicating approach of the target object to the aircraft or possibility of the approach of the target object to the aircraft; and based on the target object schematic image data, the display portion displays an obstacle state display image schematically showing a state of the obstacle around the aircraft, characterized in that the data processing portion generates the target object schematic image data when the number of times of detection of the detected data of a same region or a same target is a preset determination threshold or more.