Jaundice is the most common symptom in the neonatal period, and in general, 50%-80% of newborns develop physiological jaundice 2-3 days after birth, which later subsides on its own. Physiological jaundice is relatively mild and does not affect the intelligence of the child. Pathological neonatal jaundice can also cause manifestations of other diseases, such as nuclear jaundice, and if not treated promptly can subsequently develop serious symptoms such as moaning, screaming, convulsions, and respiratory failure. Newborns must be closely monitored for skin jaundice to allow for timely diagnosis and treatment. The jaundice index is routinely measured in the obstetrics and gynecology department for each newborn to detect certain occult jaundice and to provide early prophylactic treatment to avoid respiratory failure and to reduce the occurrence of sequelae such as mental retardation and cerebral palsy. The transdermal jaundice index is painless, simple to perform, and inexpensive, with a fee of only $12 for one monitoring session, and is very popular among parents of newborns.