Abstract

In a system for preparing a process flow in a many-kind variable-amount production line including a plurality of production processes, a target process flow block code is retrieved from a process flow block code name storage knowledge unit storing a plurality of process flow block names each composed of a combination of large processes and small processes, so that the target process flow block code is selected by use of a first selector. Similarly, a process flow block code next to the target process flow block code is selected, to prepare a process flow while discriminating an arrangement sequence of thus selected process flow block code in the process flow, with reference to a process flow arrangement sequence knowledge. A small process code is retrieved with reference to a condition key knowledge unit storing at least one item of condition key knowledge for each of the small processes, so as to select a condition key by use of a second selector. The process flow thus prepared is displayed by use of a process flow display, and a completed process flow is stored in units of product kind.