Jaundice usually occurs in newborn babies. Firstly, it is necessary to prevent viral infection during pregnancy, secondly, it is necessary to feed the baby as early as possible according to the doctor’s advice, and finally, it is necessary to pay attention to replenish the baby with water appropriately. 1. Preventing viral infections during pregnancy: During pregnancy, pregnant women must mainly prevent toxoplasmosis and rubella virus infections, so as to avoid sepsis after birth, which in turn can reduce the probability of jaundice appearing. 2. Feed the baby as early as possible: since fetal stools contain a lot of bilirubin, after the baby is born, follow the doctor’s instructions to feed the baby as early as possible, so that the fetal stools can be discharged as early as possible. This will prevent the bilirubin from being reabsorbed by the baby into the bloodstream, resulting in jaundice. 3. Hydration: Normal newborns need to urinate 6~8 times a day, so if you find that your baby is not urinating enough after observation, you need to consider that it is caused by insufficient fluid intake. Too little urine will affect the excretion of bilirubin, which may also lead to neonatal jaundice, so it is necessary to properly replenish water. In summary the prevention of jaundice is recommended to follow the doctor’s advice.