Baby 20 days jaundice, can be treated with blue light irradiation and oral anti-yellowing drugs, such as gardenia yellow granules, a packet per day, divided into three oral. Of course, according to the different causes of jaundice should also be given different treatment methods, the following cases are common: 1, breast milk jaundice, the baby in addition to jaundice response to milk are good, weight growth is normal, you can give a suspension of breastfeeding 2-3 days, jaundice will obviously subside. 2, liver function abnormalities caused by jaundice, you can test the liver function clear, if necessary, give liver preservation treatment. 3, biliary system diseases. In addition to jaundice, babies with white stools, poor nutritional status and poor response to breastfeeding can undergo the necessary surgical treatment.