The Purpose of this invention is to provide an apparatus for creating operation data with which a computer operates a machine tool, a measuring machine, or the like.The apparatus comprises a display unit, an input unit, a storage unit, an output unit, and a processing unit. The storage unit comprises a CAD data file of original drawing, a command menu data file, an operation command CAD data file, an operation command data file, and an operation data file. The processing unit comprises a first processing device for performing processes such as designing, editing, and displaying a CAD drawing, a second processing device for creating and storing operation command CAD data, a third processing device for creating and storing operation command data, a fourth processing device for creating and storing operation data, and a fifth processing device for outputting the operation data. The various other changes in the form may be included in the present invention.