The invasions “Korea War in Ming Dynasty” was launched by Toyotomi Hideyoshi (豊臣秀吉(とよとみ ひでよし), 1536-1598)who dispatched a task force to Joseon (조선, Cho-sen) in 1592, when he intended to “passed by” Joseon to invade the mainland. This episode named “Continental Policy”. This study primarily involved strategic analysis and documental analysis under the works of Niu Hsien-Chung (1913-2004) and Sun Tzu’s The Art of War. First, we referred to the strategic routes of the two to analysis what the internal and external environments are under Toyotomi Hideyoshi’s regime. Secondly, we evacuated the national strength and how “Continental Policy” works. Finally we reviewed the strategy of Korea War in Ming Dynasty and pondered how” Continental Policy” has the great influence on later generation in Japan. The thesis primarily studies the impact of “Continental Policy” on “Korea War in Ming Dynasty” and Japan’s strategic culture in the long term.