Lu Xun's Madman's Diary was a short story narrated in the first person, depicting the mental world of a mentally ill person and his dissatisfaction and resistance to reality. The protagonist of the story was a man named Madman. He believed that he was an extraordinary existence with extraordinary wisdom and strength. However, the madman felt helpless and lonely in the real world. His mind gradually distorted and began to show all kinds of strange behaviors. In the novel, the madman recorded his dissatisfaction with society and his thoughts on human nature in his diary. He tried to find his way out by resisting reality. Through the perspective of a madman, the whole novel presents a spiritual world full of contradictions and conflicts, exploring the essence of human nature and the pursuit of freedom, equality and happiness.