PROBLEM TO BE SOLVED: To easily perform position adjustment of an ankle joint.SOLUTION: A walking assist device 1 includes: a foot placing part 11 on which a foot is placed on an upper surface a foot link part 12 connected with the foot placing part 11 and arranged on a lateral side of the foot a leg link part 13 arranged along a leg. The foot link part 12 and the leg link part 13 are connected through engagement of irregularities extended in parallel and fastened so as to be adjusted by a screw. Thereby, position adjustment by engagement after relatively shifting one irregularities from the other irregularities vertically and position adjustment by relatively sliding the engagement of the irregularities in parallel enable position adjustment in vertical and front/rear directions.COPYRIGHT: (C)2016,JPO&INPIT