Some newborns may develop jaundice after birth, and some babies are affected by their own mother’s milk. This is because his breast milk contains a particularly large amount of active substances, and the baby is likely to develop jaundice. 1, the cause of some breast milk jaundice, most likely because the mother’s milk contains substances that seriously inhibit the rapid formation of transferase activity of sugar substances inside the liver cells. Some mothers’ milk contains a lot of unsaturated fatty acids, and because of their high content, it is easy for these substances to increase rapidly, which also inhibits the rapid production of transferase, making the jaundice persistent in the child. 3, for those newborn babies, there is a rich material inside the intestine and stomach, they can produce some normal flora, when drinking into the breast milk but seriously hindered, resulting in some bilirubin can not be well decomposed, triggering the appearance of jaundice. Many babies will have jaundice after birth, which is a normal physiological reaction, but if it is caused by breast milk, you must pay attention to it and take reasonable measures to regulate it, and if necessary, you can reduce jaundice by drinking milk powder for a short time.