Provided are a workpiece unit in which a holding member (1) is attached to a workpiece body (1) without use of an adhesive, and a method of producing the unit. The workpiece unit (10) comprises a workpiece body (1), and a holding member (2) which is arranged at at least a part of an outer circumferential portion (1c) of the workpiece body (1) and directly contacts with at least a part of the outer circumferential portion (1c).
