Nine-month-old infants can eat pig liver. Pig liver is rich in protein, lecithin and trace elements, such as vitamin A, vitamin B1, vitamin B2, vitamin B12, iron, zinc, etc., which is conducive to the intellectual and physical development of infants. Vitamin A can protect the eyes and prevent night blindness caused by vitamin A deficiency in infants. Pig liver also contains a lot of iron, for the prevention and treatment of iron deficiency anemia is also helpful. For 9-month-old infants, eat pig liver in moderation, when you first add pig liver, pay attention to small doses, do some soft and rotten, you can eat 1-2 times a week, each time about 50g. After eating, we should observe whether the infants have symptoms of discomfort to pig liver, if the infants do not have any symptoms of discomfort, then we can consider gradually increasing the amount of pig liver. A few infants may have congestion and edema around the corners of the mouth, or skin rash or urticaria after eating pig liver, and some infants may have digestive symptoms, such as nausea, vomiting, abdominal distension, abdominal pain, etc. These symptoms may be allergy or food intolerance to pig liver, and need to stop eating pig liver. If the symptoms are serious, you need to go to the hospital immediately. Be careful to use fresh pig liver and make pig liver puree or liver puree porridge for infants, which is more hygienic and rich in nutritional value.