PURPOSE: To provide a production control system in sewing capable of automatically applying the lot number for the preset number of sewn objects.

CONSTITUTION: A preset number of sewn objects having the common sewing parameter are set to one sewing unit, the number of the sewn objects of the sewing unit is inputted in sequence to the lot number stored in a memory section, and the lot number is automatically applied to each sewing unit. For the application of the lot number, the lot number stored in the memory section is deployed, and the number of the sewn objects of the sewing unit is inputted to the unregistered lot number. The lot number is applied in sequence in the order of the input of the number of the sewn objects of the sewing unit or for each sewing parameter. The lot number can efficiently be applied.