A numerical control device for a machine tool which causes a tool to move along a movement path decided according to a machining program, the numerical control device including: a limit setting storage unit in which limit values of a plurality of parameters related to movement of the tool are set; a limit velocity calculation unit which calculates a plurality of limit velocities, which respectively correspond to the limit values at each position of the movement path; a feedrate determination unit which defines a minimum value among an ideal velocity of the tool and the plurality of limit velocities at each position on the movement path as a feedrate of the tool at each position on the movement path; and a deceleration recording unit which stores a type of the parameter corresponding to a case of the feedrate determination unit defining the limit velocity as the feedrate.