A numerical control device includes: a command analysis unit that analyzes a processing program which includes, in one block, a first command including a numerical value defining shaft operation, a second command including any of a preparation function command, a speed command, a main shaft rotation command, a tool exchange command, and an auxiliary command, and a third command defining the execution timing of the second command; and a command information generation unit that generates command information of the second command on the basis of the first command and the third command which have been analyzed by the command analysis unit.