The presence of high hepatic total bilirubin in children may be related to improper diet or abnormal liver function and other factors. 1. Improper diet: When children drink less water or often consume high-fat and high-cholesterol foods, they may have mildly high total bilirubin in liver function. 2. Abnormal liver function: high bilirubin often reflects abnormal liver function, which is mainly caused by liver diseases, common diseases include jaundice, toxic hepatitis, hemolytic disease, etc. If the high bilirubin is not obvious, it may be seen in relatively mild liver injury. There may be other reasons for children to have high total bilirubin in liver function, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.