現代日本代表性的作家三島由紀夫(1925-1970)於一九七○年一月二十五日，闖入東京陸上自衛隊營區切腹自殺。這就是大家耳熟能詳的「三島事件」。關於三島此種行為與其自殺的理由何在，可以從各種不同的角度來分析、解釋，但我們透過戰後三島自己撰寫的許多散文可以確認的是：在「三島事件」以及戰後三島所開展的言行舉止之背後，確實存在著《葉隱》式武士道理念這一點。三島後半生的生存方式與《葉隱》這一本書之間有著非常深刻的關連，這一點絕對是毫無疑問的。因此，本文擬闡明三島受到《葉隱》式武士道理念內容的影響，以及其所產生的共鳴為何，而從其《葉隱》式的武士道理念這個觀點，來探討三島的行為以及其自殺的理由何在。

Yukio Mishima (1925-1970), the representative writer intruded into Japan Ground Self-Defense Force's office in Tokyo and suicided on January 25, 1970. This was well-known ”The Mishima Incident.” We can explain the cause of Mishima's suicide from different views, but we can also know that behind the incident and Mishima's behavior, there was Bushido from Hagakure by reading Mishima's articles written after World War Ⅱ. It is undoubted that there is a profound relationship between Mishima's second half of life and Hagakure. Ⅰ expounded the influence of Bushido from Hagakure on Mishima and his responses, to explain the cause of his suicide from the view of Bushido from Hagakure.