A stability control device is provided that is capable of reducing an unpleasant sensation imparted to a driver in a steer-by-wire vehicle. The stability control device includes a steer-by-wire controller that controls a turning amount of the turning part based on a steer-by-wire turning amount that corresponds to a steering amount of the steering unit, a turning amount for suppressing the yaw angle, which is an angle formed by a white line and a traveling direction of a host vehicle, and a turning amount for returning the host vehicle to the center of a lane when the host vehicle has departed from the center of the lane. The controller controls a steering reaction force based on the steering amount without the yaw angle-suppressing turning amount and the lane-center-returning turning amount being reflected in the steering reaction force imparted to the steering unit.