Osamu Dazai's literature is one of the most important schools of modern Japanese literature, famous for its strong humanist spirit and unique literary style. Osamu Dazai's literary works covered a wide range of topics, including social criticism, human nature exploration, love, war, etc. His representative works included "The World's Disqualification" and "The Setting Sun". Osamu Dazai's literature was featured by deeply reflecting the various problems of Japanese society and exploring the nature of human nature and the meaning of human existence. The characters in his works were vivid and sincere, full of thoughts and feelings about life and humanity. The language of Dazai Osamu's literature was concise, bright, and infectious. He often used figurative and symbolic rhetoric techniques to make his works more artistic. Osamu Dazai's literature had a high reputation and influence in Japan and around the world. His classic works were widely translated and passed down to this day.