To write a novel, one needed to first determine their own theme and style in order to make the work more unique and attractive. Here are some factors that can help you choose a genre: 1. The theme is the core of the novel. It can be about love, adventure, science fiction, fantasy, history, politics, etc. It can also be about personal experience, social reality, etc. After determining the theme, you can choose the corresponding genre according to your own preferences and writing style. 2. Writing style refers to the author's personal style and language style. It can be expressed through story plots, character creation, dialogue, and so on. Different styles are suitable for different types of novels. For example, suspense novels usually need to create a tense atmosphere and detailed descriptions, while science fiction novels pay more attention to science and fantasy. 3. Audience: The audience of a novel refers to the type of novel they like. For example, young people may prefer science fiction, fantasy, and other types of novels, while older people may prefer historical, political, and other types of novels. He could also choose the corresponding type according to his preferences and the needs of the audience. You can choose the corresponding genre according to your own preferences and writing style, and constantly strive to improve your writing level to create excellent works.