The ending of Lu Xun's novel Medicine was very symbolic, expressing the distortion of human nature and the loss of morality. Below are the analysis and comments of the experts on the ending of the novel: The ending of Lu Xun's novel Medicine expressed the distortion of human nature and the loss of morality. Fang Hongjian, the protagonist of the novel, was bound by his own beliefs and adopted a cold-blooded and heartless attitude towards his patients, which eventually led to his remorse and moral decay. At the same time, Detective Sun, the boss of the pharmaceutical company in the novel, was unscrupulous and even killed patients in pursuit of commercial interests, which also reflected the reality of today's society where commercial interests were paramount. The ending of the novel also involved historical and medical knowledge. In the novel, Fang Hongjian's understanding of Chinese medicine was very limited, but he was able to write a paper on Chinese medicine, which showed that the Chinese society at that time did not have a deep understanding of Chinese medicine. At the same time, the medical knowledge depicted in the novel was also misleading to some extent, emphasizing the importance of the popularity and updating of medical knowledge. The ending of Lu Xun's novel Medicine has profound thoughts and cultural implications, reflecting the reality of Chinese society at that time and people's thoughts on life, morality, belief and other issues. The ending of the novel also made an appeal to people to pay attention to patients, respect life, social justice and morality. The ending of Lu Xun's novel Medicine was very symbolic and also reflected the social reality at that time and people's thoughts on life, morality, belief and other issues. The ending of the novel has a certain ideology and cultural value, which still has a certain enlightenment significance for today's society.