This period of writing "The Scream". At the peak of the "May 4th" New Culture Movement, Lu Xun, who had experienced long-term and profound observations and reflections on China, actively participated in this great epoch-making movement with a strong passion to oppose the old culture and old morality, and created Many brilliant new literary works such as essays, poems, and novels, especially his short vernacular novels, "are mostly based on unfortunate people in a diseased society, with the intention of exposing the suffering of the disease and attracting attention to treatment" (quoted from Lu Xun's "I "How to Start a Novel"), with its shocking brilliant thoughts and superb artistic skills, fully demonstrated the achievements of the literary revolution and won the author an immortal world reputation. On December 3, 1922, before "The Scream" was compiled into a book, the author wrote this "Preface". This article is the preface written by Mr. Lu Xun for his first collection of novels "The Scream". "Automatic Preface" not only reviews the author's life experience from the end of the 19th century to the "May Fourth Movement" period, but also shows the development process of his thoughts, and also reflects the author's literary and artistic views and creative attitude. Therefore, "The Preface to "The Scream"" is a key to a comprehensive understanding of "The Scream" and is also a biography of Lu Xun's early ideological development.