The main content, central idea, and theme all had their own characteristics and meanings. The specific differences were as follows: The main content refers to the main plot, characters, and scenes of the novel. The main elements are the core of the novel, usually the most important part of the novel, which determines the overall style and theme of the novel. The central idea refers to the theme or core idea of the novel. It is the summary and summary of the novel, reflecting the meaning and values that the novel wants to express. The central idea was usually the main theme of the novel that ran through the entire novel. Thesis refers to the core value and meaning that the novel wants to convey. It is the core and essence of the novel, and also the highest value and meaning of the novel. The gist of the novel is usually closely related to the main content and theme of the novel. It is the main theme of the novel and the enlightenment and enlightenment that the readers can get from the novel. There was a close connection between these three concepts. The main content and theme were the basis and premise of the central idea and theme. Without the main content and theme, the central idea and theme could not be established. At the same time, the central idea and theme were also the main content and theme of the materialization and deepening. Without the main content and theme, the central idea and theme could not achieve the depth and meaning it should have. Therefore, to understand the content and theme of the novel, one must first understand the theme and main content of the novel in order to better understand the theme and meaning of the novel.