Writing historical novels could change history. Historical novels are a genre of literature that presents historical events and characters through fictional stories, allowing readers to understand history through imagination and exploration. When writing historical novels, the author could change historical facts by adding fictional plots and characters to create a new historical story. Such an act of changing history might bring some risks and challenges. If the author's fictional plot and characters contradict the historical facts, it may lead to errors and misunderstandings in historical records, which will bring difficulties to historical research. In addition, if the author deliberately distorted the truth of history, it might cause public dissatisfaction and criticism, and might even lead to the authenticity of historical events being questioned. Therefore, when writing historical novels, authors need to be careful about changing history to ensure that the fictional plot and characters are consistent with historical facts to avoid negatively affecting history. At the same time, the author also needed to have a certain understanding and research of historical knowledge to ensure that the historical novels he wrote matched the historical facts and historical records.