PURPOSE: To provide a numerical control device capable of saving time furthermore, and positively performing rewriting without forgetting the rewriting operations, when the contents of machining information related to shaft.

CONSTITUTION: A machining program memory 24a for storing the machining program having plural machining processes to which the machining information related shaft is preset, an override switch 9 for indicating the altered contents to a command value in the machining information related to shaft when the machining program is executed, are provided. Further, an override data memory 23a for storing the contents indicated by the override switch 9 for each machining process, an execution key 7b for indicating that the machining information related to shaft is edited, a processor 21 for altering all the machining information related to shaft of the machining program based on the altered contents in the override data memory 23a, a control program memory 22, a keyboard 7, etc., are provided.