Abstract: Disclosed is a manufacturing management system for controlling an SMT line to manufacture printed circuit boards the manufacture of which has been designated. A source data management file created by CAD data for a printed circuit board, an inventory parts management file, a cartridge management file and an SMT line information file which includes manufacturing conditions of the SMT manufacturing equipment and equipment arrangement are registered in a database. An SMT set-up support unit creates a set-up instruction manual, which specifies set-up for manufacturing printed circuit boards on the SMT line, by referring to the various files that have been stored in the database. Further, a mounting data creating unit creates mounting data, which are for allowing the mounting machine to mount parts on printed circuit boards, using part setting position addresses of the mounting machine contained in set-up information and part mounting position coordinates contained in the source data management file.