Neonatal jaundice is one of the common symptoms in newborns. It can be a normal physiological phenomenon or an external manifestation of certain diseases. Jaundice is generally divided into physiological jaundice and pathological jaundice. The treatment of jaundice generally involves observing the progression and severity of the baby's jaundice and any accompanying symptoms. The causes of jaundice are numerous. Regarding the feeding of jaundiced infants, it is important to feed on demand and increase feeding to promote the excretion of urine and stool, which can help reduce jaundice. However, it is not advisable to feed water to newborns with jaundice. Typically, the growth and development of babies are relatively rapid in the early stages, requiring nutritional supply. Water has virtually no nutrients, but breast milk or formula feeding provides sufficient hydration for the baby's needs. Therefore, for jaundiced babies, usually within the first six months of life, exclusive breastfeeding is recommended. In special circumstances, formula supplementation may be appropriate, but feeding water is not recommended.