Neonatal transcutaneous bilirubin is a non-invasive test that makes it very easy to detect bilirubin levels in the child’s blood. Since the value of jaundice measured by transcutaneous bilirubin is slightly different from the true bilirubin level in the child’s blood. However, there is a positive correlation between the transdermal bilirubin value and the bilirubin level in the blood, and the two are similar. Because it is easy to measure transcutaneous bilirubin in newborns, it can be repeated several times and is a noninvasive method. Currently, most screening tests for jaundice or dynamic tests of efficacy are often performed with transcutaneous bilirubin measurements. The specific measurement method is that parents can use a jaundice meter, turn on the switch, press hard, put the bilirubin probe on the child’s forehead and forehead, measure three times to take the average, if the bilirubin level is significantly high, the child should be promptly given phototherapy and other treatments.