PURPOSE: To reduce cost by controlling and managing respective manufacturing facilities by means of respective inherent commands, converting respective commands to a common command by a command conversion corresponding table and executing instruction and report based on the common command.

CONSTITUTION: Reporting contents and instruction contents common to respective manufacturing facilities 2 are mutually transmitted to manage facility states and a facility state managing means 101 converts a command notation format having the reporting contents inherent in respective manufacturing facilities into a common command notation format in order to recognize each inherent command as a common input command. A command notation conversion part 210 converts a common output command having issued instruction contents into a command format inherent in the manufacturing facility by which the manufacturing facility 2 can be recognized, and when commands issued between the facility management controller and each facility 2 have a conversational means, the conversational procedure for command transfer is managed.