Frog is a realistic work, which truly reflects the difficult implementation process of the national policy of family planning in the northeast of Gaomi, Shandong Province. Wan Xin has two contradictory identities: one is a rural doctor, who has delivered nearly 10 thousand babies in his life and is called the "goddess who sends children"; The other is a family planning cadre who resolutely implements the national policy of family planning, which is also commonly known as the "murderer". For Wan Xin, to achieve reunification, she lived in unavoidable extreme contradictions and pains all her life. When reading Frog, readers always feel cruel: first, the plot of the novel and the fate of the characters are cruel; second, Mo Yan objectively and calmly wrote the cruelty of extreme pain in other people's souls. Gaomi Northeast Township is not only the place where the story takes place, but also a region in a general sense. At the beginning of the implementation of the national family planning policy, there were countless towns and villages in Northeast China, and there were many family planning cadres like Wan Xin. Therefore, Mo Yan's writing has extensive representativeness and practical significance. Everything in Frog points to the word "life", and the names of the main characters, stories and even the titles of publications are all singing for life. All these allegorical and symbolic management techniques push the novel to a higher level, namely observing life, praising life and fearing life.