PROBLEM TO BE SOLVED: To provide a walking assist device bringing light movement burden to a person who needs nursing care.SOLUTION: A walking assist device 1 as a walking assist device 1 for a person (A) who needs nursing care to move in a standing position, holds the person (A) who needs nursing care in a standing position, and supports at least one of a standing movement and a seating movement of the person (A) who needs nursing care. The device includes: a holding part 22 having a pair of wing parts 220L and 220R, and a central part 220C arranged between the pair of wing parts 220L and 220R; movable bodies 29L and 29R as wheels rolling on a road surface; a plurality of joint parts 27, 28 and 30 arranged between the holding part 22 and the movable bodies 29L and 29R; and a control part 40 capable of moving the holding part 22 according to the physique of the person (A) who needs nursing care by controlling the movement of the joint parts 27, 28 and 30.