A jig determination method, a production base system, and an information processing system. The jig determination method executed by an information processing system for controlling production of an ordered product by printing includes acquiring correspondence information associating, for each image forming apparatus, a jig attached to the image forming apparatus and the image forming apparatus, determining a jig to be attached to an image forming apparatus on standby based on the correspondence information and a jig to be used in printing of an ordered product, and outputting information indicating a change of the jig attached to the image forming apparatus on standby based on a result of the determining.