" Thunderstorm " was a classic in the history of modern Chinese literature. It was mainly about the power struggle and marriage disputes within a family. The following are the main contradictions between the characters in the work: 1. The conflicts between the families: There were complicated emotional entanglements and conflicts of interest among the members of the Thunderstorm family. They fought constantly for the power and interests of the family. 2. The contradiction between men and women: In the novel, there is a deep emotional contradiction between Cao Yifang, the young lady of the Cao family, and her fiancé, Zhou Puyuan. At the same time, there is also the pressure of family and social public opinion. The contradiction between different social classes: The Cao family and the Zhou family were both wealthy capitalist families, but the class difference between them led to contradictions and conflicts between different families. 4. The contradictions between people: Each character in the novel has their own contradictions and problems, such as Zhou Puyuan's psychological problems, Cao Yifang's marital problems, etc. These contradictions interweaved together to form the complicated and profound plot structure of Thunderstorm.