A gait training device operates in cooperation with a wearablemotion assist device that specifies a walking phase of a wearer, andapplies power to the wearer in correspondence to the walking phaseof the wearer, the gait training device including: a body weightsupport device that lifts up the wearer to support a weight applied onfeet； a moving unit that is movable according to a walking motion ofthe wearer； and a control device that controls a moving speed of themoving unit and/or an amount of body-weight support by the bodyweight support device based upon a position of a center of gravity ofthe wearer detected by the wearable motion assist device.
