An operation aptitude judgment device includes a perception difficulty space detection unit that detects a perception difficulty space in which a perception object as an object that the user should perceive when the user performs a planned operation is difficult for the user to perceive based on vicinal object information acquired from a vicinal object detection device that detects a vicinal object existing in a vicinity of the user； a user perception movement detection unit that detects a user perception movement, as a movement of the user when the user tries to perceive the perception object, based on user movement information acquired from a user movement detection device that detects a movement of the user； and an operation aptitude level calculation unit that calculates the operation aptitude level of the user based on the perception difficulty space and the user perception movement.
