本文主要利用日本外務省外交史料館〈臺灣人關係雜件〉、《支那在留邦人人名錄》、《滿華職員錄》、〈六然居典藏臺灣史料〉及相關口述歷史，來描述上海在日本占領下迄戰後二二八事件前後，臺灣人在上海的活動。有關這部分過去雖有人研究，但最多僅及於1938年；且未注意到臺灣人有擔任通譯、情報人員及在汪政權為官者。本文利用上述資料簡述太平洋戰爭期間，在上海從事各行各業的臺灣人，戰後在上海先後組織上海臺灣同鄉會、臺灣重建協會上海分會，分別由李偉光、楊肇嘉領導，隱然是國共鬥爭的一環。二二八事件前後，在上海的臺灣人都向南京各重要中央機關陳情，希望撤銷行政長官公署，妥為處理事件的善後。究竟有沒有因此影響了政府的決策，雖沒有明顯的證據，但在上海的臺灣人團體，在當時可說是最有力、最注意島內形勢發展的團體。

With reference to materials from ”Taiwanjin kankei zaken（臺灣人關係雜件）” archived at the Diplomatic Archives of the Ministry of Foreign Affairs of Japan and reviewing related oral history, this study examines the activities of Taiwanese in Shanghai between 1937 and 1947, a period beginning from the Japaenese occupation of Shanghai until the 228 Incident. Similar research has previously been conducted but most work covered only up to 1938, and not much attention taid to the Taiwanese serving as interpreters, intelligence agents and officials in the puppet regime of Wan Ching-wei. This paper describes the activities of Taiwanese from various works in wartime Shanghai. In the aftermath of World War II, these overseas Taiwanese established organizations such as Taiwanese Association of Shanghai, led by Lee Wei-kuang（李偉光） and The Shanghai Branch Society for the Reconstruction of Taiwan, headed by Yang Chau-chia（楊肇嘉）. These organizations formed a part of the struggle between the Nationalists and the Communists. With the outbreak of the 228 Incident, the Taiwanese in Shanghai appealed to the central authorities in Nanjing, expressing their wish of owing The Taiwan Provincial Administration and having the incident properly redressed. Whether or not their petition had any impact on the subsequent government decisions and policies remains unknown. Nevertheless, even with no obvious supporting evidence, the Taiwanese organizations in Shanghai at that time should have been considered the most powerful group outside Taiwan, keeping a close watch on the island’s development on various fronts.