Osamu Dazai's " The World's Disqualification " was a famous Japanese novel that described the experiences and thoughts of the protagonist Osamu Dazai as he grew up. The book described Osamu Dazai's family environment as a child, as well as his loneliness and incomprehension in his family. Later, Osamu Dazai began to show his talent in the field of literature, but his works were still suppressed and restricted by society and human nature. Osamu Dazai expressed his disappointment and powerlessness towards society and human nature through describing his inner world and his reflection on human nature. The Disqualification of Humanity was considered one of Osamu Dazai's masterpieces and a classic in the history of Japanese literature. It was widely translated into many languages and widely read and studied.