A manufacturing management system and method. A processing unit calculates an
acceleration
capability according to a capacity loss rate for a target fabrication velocity
and a number of work pieces under the target fabrication velocity in the production
line, and a fabrication acceleration capability according to an original capacity
loss rate for an average fabrication velocity and a given number of work pieces
under the average fabrication velocity in the production line. The production line
is managed according to the acceleration capability and the fabrication acceleration capability.