PROBLEM TO BE SOLVED: To provide a percutaneous administration device capable of increasing an amount of administrable medicament, and a method for manufacturing the percutaneous administration device.SOLUTION: The percutaneous administration device includes: a base body 11 including a first surface 11S and a second surface 11T as an opposite-side surface of the first surface 11S and a protrusion 12 protruding from the first surface 11S. The protrusion 12 includes an irregular surface, the irregularity includes a plurality of recessed/projecting elements of projections 13 and recesses 14. The plurality of recessed/projecting elements includes streak-like recessed/projecting elements extending in a first direction, and streak-like recessed/projecting elements extending in a second direction crossing with the first direction.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】投与可能な薬剤の量を増大させることのできる経皮投与デバイス、および、経皮投与デバイスの製造方法を提供する。【解決手段】経皮投与デバイスは、第1面11Sと、第1面11Sとは反対側の面である第2面11Tとを有する基体11と、第1面11Sから突き出た突起部12と、を備える。突起部12の表面は凹凸を有し、凹凸は、凸部13または凹部14である凹凸要素を複数含み、複数の凹凸要素は、第1方向に延びるスジ状の凹凸要素と、第1方向と交差する第2方向に延びるスジ状の凹凸要素とを含む。【選択図】図2