A walking assist device is equipped with a load transmit portion, a foot attachment portion fitted to a foot of a user, and a leg link provided between the load transmit portion and the foot attachment portion. The foot attachment portion is equipped with a connecting member connected to the lower end of the leg link at a position forward of an ankle of the user while having at least a degree of rotational freedom around an axis line in a horizontal direction seen from front, and the connecting member is prevented from wobbling back and forth from the change in the direction of the load transmitted from the leg link. The foot attachment portion is equipped with the footplate member having a rigid plate capable of being stepped on by the foot of the user at outside an acting range in a sagittal plane of the load transmitted from the leg link to the connecting member. The connecting member is coupled to the footplate member so as to limit the rotation with respect to the footplate member round the axis line in the horizontal direction as seen from front.