Eating pig liver has advantages and disadvantages. The liver is the largest detoxification organ in animals. During the period from being released to being slaughtered, pigs used a lot of drugs to treat some diseases and were also vaccinated. A large number of drug residues are concentrated in the liver, and people in poor health are prone to food poisoning or allergies. However, the liver is rich in zinc, which can promote the growth and development of bone lattice. But this element can be replaced by peanuts, so it is best not to eat the liver, including the liver function of all animals: pig liver is rich in nutrition, in which the iron content is more than 18 times that of pork, and the protein content is much higher than that of lean meat, which is a good product for nourishing qi and blood, and can prevent and treat eye diseases such as blurred vision, dry eyes, night blindness and pinkeye. Children often eat pig liver, which can make their eyes bright and energetic. The nutritional content of pig liver is more than 10 times that of pork. The content of vitamin A in animal liver exceeds that of milk, eggs, meat, fish and other foods, which can protect eyes, maintain normal vision and prevent eye dryness and fatigue. In addition, vitamin B2 supplementation can maintain healthy skin color, maintain normal growth and reproductive function, enhance human immune response, resist oxidation and prevent aging. Pig liver is rich in protein and animal iron, which is a good nutritional food for children with nutritional anemia. It also contains a lot of vitamin A, which is helpful for children's bone development. Pig liver is rich in vitamins A and C, and each100g contains vitamin A 10000 units and vitamin C 20mg. In addition, it also contains protein, fat, thiamine, riboflavin and minerals such as calcium, phosphorus and iron. These nutrients are not only beneficial to health and fitness, but also have the functions of enriching blood and iron, nourishing liver and improving eyesight. There will be some viruses, which will be soaked in light salt water for a while before cooking and then taken out to eat.