Production management system and production management method

A production management system comprising:

• a storage unit configured to store a holding position at which a first work is held among holding positions of the holding unit including first and second cases respectively capable of holding a plurality of works and a work ID identifying the first work in such a manner that the holding position and the work ID of the first work are associated each other;
• and
• a controller configured to change the information of the holding position associated with the work ID of the first work in the storage unit from the first position to a third position if the first work held at the first position of the first case is held anew at the third position of the second case.

A production management method of managing a history of processes of a plurality of works in a production line in which the processes on the works are executed by using a case capable of holding a plurality of works, the production management method comprising:

• providing a case ID tag physically attached to the case and enabling to identify a specific case, and a work process history database recording a production process history per work;
• and
• managing the history of the processes concerning each work by using the case ID identifying the case ID tag recorded in the work process history database and a work ID associated with a holding position of the work within the case.