Both socialistic detective novels and Benji detective novels are a type of detective novel, but there are some basic differences between them as follows: 1. The socialist-style mystery novel focuses on revealing social, political, economic and other social problems. The main plot of a socialistic mystery novel revolved around the psychological changes of the characters and the development of social events. It often began with the occurrence of an event and gradually revealed the truth of the incident and the modus operandi of the suspect, eventually finding the murderer. 2 Benji's detective novels focused more on the techniques and techniques of detective novels, emphasizing the importance of mathematics, logic, and detective reasoning. The main plot of Benji's mystery novel was more compact and complicated, and it often required the reader to have a certain degree of reasoning ability to understand it. The plot of Benji's mystery novels often began with the appearance of a suspect. Through the interweaving of multiple clues and the process of reasoning, the real murderer was finally found. Therefore, there were significant differences between socialistic detective novels and Benji detective novels in terms of plot, theme, and character creation.