The jaundice index can be measured by visual inspection, using the jaundice instrument, and checking the liver function. The details are as follows: 1. The simplest method is to visually check the color of the patient's face, eye corners, and body to roughly know whether there is yellowing. 2. The preliminary values can be obtained by measuring bilirubin on the patient's forehead, cheek and chest with the jaundice meter, but there may be some errors. 3. You can also go directly to the hospital for liver function inspection, through which you can accurately measure whether there is an increase in bilirubin, and know the value of total bilirubin, direct bilirubin and indirect bilirubin in the body. If there is an increase, you can treat it by sunbathing and taking Yinzhihuang granules. Jaundice mainly refers to the phenomenon that the level of bilirubin in the body exceeds the normal range and the skin becomes yellow, which is also a common clinical disease.