Abstract: To obtain an automatic program generation apparatus automatically generating an application program of uniform quality independent of a personal ability of a designer or a model of a process control computer, and printing standardized specifications with design contents correctly described. The apparatus includes: specification storage units for storing specifications which are to become samples; program information input units for inputting in a table format application program information about a production process control computer; a program generation unit for generating a source code of each application program according to input information; and a specifications completion unit for editing the specifications according to the input information, and completing the specifications corresponding to each application program.