PROBLEM TO BE SOLVED: To provide a chair used for attaching a walking support device capable of easily attaching/detaching the walking support device.SOLUTION: A chair 100 for attaching a walking support device 100 used for attaching the walking support device S comprising: a lumbar unit 10 to be attached to a users lumbar and left and right leg units 30 which are detachably connected to the lumbar unit 10 through connection parts 50 and are to be attached using belts 40 wounded around the users legs 5. The chair 100 includes: a seat plate 120 which includes a seat surface part 111 for the users sitting and placing parts 112, 113 on both sides of the seat surface part 111 for placing the leg units 30 and is supported through legs 110 and a backrest 140 which includes a placing part 142 for placing the lumbar unit 10 and is provided behind the seat plate 120. The seat plate 120 has a space H for inserting the belts 40 into between the users femurs 7 and seat surface part 111.
