Jaundice is a common disorder of the newborn period and infancy. Many people think that jaundice is not a disease, so they don’t take it seriously. Most jaundice is a normal part of the neonatal period and does not require special treatment. However, there are some cases of jaundice that can cause serious problems if not treated promptly due to negligence. Generally, jaundice appears 3 to 5 days after birth and peaks in 5 to 7 days, and subsides about two weeks after birth in full-term infants and can be delayed until full term in premature infants. If jaundice persists after the first month of life, it is important to seek medical attention. In addition, if the jaundice value exceeds 12.8 (measured transdermally) during the month, it is also necessary to visit the hospital to promptly reduce the yellowing treatment. If the baby’s stool is light yellow or white, you should pay close attention to the color of the stool.