日本在明治維新後邁向近代化、致力於殖產興業，過程中欠缺技術人才，渡邊洪基等舊幕臣懷抱「技術立國」的構想，與抱持「工業立國」理念的民間企業家結合，成立工手學校，展現「技術立國」和「工業立國」的角色與功能。值得注意的是，工手學校在日本國內達成「技術立國」、「工業立國」的使命後，隨著日本帝國對外擴張，進一步前往海外活動，陸續在臺灣、朝鮮、滿洲發揮其長才。本文究明日本帝國經營殖民地臺灣所需的建築技術人才之來源，工手學校畢業生在臺灣總督府土木局營繕課中的角色與重要性，及其與帝國大學和其他工業學校出身的技術者之關係，彰顯技術人才流動與殖民統治的關係。並以尾辻國吉為例，闡明工手學校層級建築技術人才在臺灣官廳活動之實況，及其所代表的歷史意涵。

After Meiji Restoration, Japan endeavored to modernize herself and promote industrialization. However, such ambition was hampered by the lack of technicians. To make up for such deficiency, Koshu Gakko, an institute that provided technical training was founded under the collaboration of the imperial government and private enterprises. The success of Koshu Gakko in cultivating technicians not only contributed to the domestic industrialization and modernization of Japan, these technicians also played a role in the imperial expansion of Japan to its neighbors including Taiwan, Korea and Manchuria. This study traced the source of architectural technicians in Japanese colonial Taiwan, and examined the roles and importance of graduates from Koshu Gakko in the Department of Building and Repairs of Taiwan Sōtoku as well as their interaction with technicians trained by the Tokyo Imperial University and other technical institutes. This exploration served to highlight the relationship between flow of technical talents and colonial governance. The case study of Otsuzi Kuniyosi, a graduate of Koshu Gakko, portrayed the actual life of an architectural technician in the Japanese colonial government and the historical significance he represented.