To judge and analyze the factor of the development of non-conformity by providing a data processing device, in which the conformity/non-conformity of respective matters to be inspected is judged and data or number of defective per feeding mechanism of matter to be inspected at a predetermined time interval is to be created.

A net work is formed by connecting respective processes of a resin drying part 10, a bottle forming part 12 and the like to a bus 25. To the bus 25, a controller 26 is connected so as to successively receive measurement or inspection data from respective parts for controlling collectively. Further, an electronic digital computer 28 is connected to the controller 26 for executing the calculation of the inspection data brought by the controller 26. The controller 26 receives the results of the calculation for analyzation, estimation or the like. When necessary, a process for issuing alarm or the like is executed. Furthermore, the controller 26 obtains an information necessary for the manager of a production line 1, connects to a personal computer 30 for inputting indications and displays the results of analyzation and estimation or the respective processes.