1949年11月,国共内战已近尾声。第三次下野的蒋介石前往四川视事,由此确立国民政府迁台、反攻大本营设于西昌的方针,随即调派重兵、运输大批军用物资进入西昌,以期建成国民党在大陆的最后军事基地。然而,由于中共军队迅速展开势如破竹的最后攻势,该计划很快被彻底粉碎。本文以台北“国史馆”所藏的大量“蒋介石档案”为主,探寻蒋从入川到迁台、寄望西昌直至迷梦幻灭的历史真相,为国共内战最终幕落西昌提出有力佐证。 In 1949 November, the civil war between the KMT and the CPC nearly reached an end. Chiang Kai-shek, who was on his third trip to Sichuan, set a goal of relocating Taiwan’s national base and setting up a base camp in Xichang. He then dispatched heavy troops and transported large quantities of military supplies to Xichang to build the Kuomintang’s last military base in the mainland. However, due to the quick and unabasurable CCP offensive, the plan was soon completely shattered. Based on the large number of “Chiang Kai-shek Files” hidden in the History Museum of Taipei, this paper explores the historical truth from Chiang Kai-shek to Ch’en Ch’uan and the hope of Xichang until the dream expires, providing strong evidence for the final curtain of Xichang’s civil war .