In a numerical control device for performing a control axis switch, each of a plurality of control axis units includes an axis movement amount conversion unit configured to convert a movement amount of a servo motor into a movement amount corresponding to each of the control axis units of the plurality of control axis units, an axis position data storage unit, and a control object axis position data storage unit configured to store an axis position of a control object at a time when the control object is separated from a single drive unit, and an axis position stored in the axis position data storage unit is configured to be updated by using the movement amount of the servo motor, regardless of whether or not the control object is connected by a control axis switch unit to the control axis unit.