Camel Xiangzi was a realistic novel by Chinese writer Lao She. It described the life of the poor people in Beijing as the background, and through the struggle and fate of the protagonist, Camel Xiangzi, it showed the struggle of social class and human nature. The theme could be understood as the core idea or theme that the work wanted to express. In Camel Xiangzi, the main theme included: The struggle of human nature: Through describing the life experiences and struggles of Camel Xiangzi, the novel shows the struggle of human nature in poverty and oppression. In order to get rid of poverty and humiliation, Camel Xiangzi constantly worked hard and pursued his own interests, but at the same time, he was limited by reality and had to make sacrifices and compromises. Solidification and oppression of social classes: The novel reveals the existence of social class solidification and oppression by describing the hard life of the people at the bottom of society and their inescapable social status. The poverty and unfair social structure made Camel Xiangzi and the others fall into endless toil and despair. Their fate seemed to be doomed. Deep reflection on human nature: Through the image of Camel Xiangzi, the novel reflects the complexity and contradiction of human nature. He had a positive pursuit and hard work, but he was also troubled by the social environment and personal interests. Camel Xiangzi's fate formed a strong contrast with his inner struggle, which triggered a deep reflection on human nature. In general, the theme of Camel Xiangzi was to show the plight of the people at the bottom of society and the struggle of human nature by depicting the struggle and destiny of the protagonist. At the same time, it reflected the existence of social class solidifying and oppression. It was a reflection of social reality and human nature, presenting a real and profound picture.