Total bilirubin of 26μmol/L is mildly elevated, which is usually not serious, but needs to be judged according to the specific cause. Elevated total bilirubin can be physiological, for example, staying up all night can also cause mild elevation of total bilirubin, usually without any clinical symptoms, and liver function is not abnormal, this situation is usually not serious, and will return to normal after rest. Common pathologic factors include hepatocellular damage or obstruction of the biliary system. In case of hepatocellular damage, mild elevation of total bilirubin suggests that the condition is not too serious, and most of the cases can be normalized after active liver-protecting treatment. If the total bilirubin is 26 μmol/L due to obstruction, the obstruction is not very serious, but it is necessary to determine the cause of the obstruction. If the obstruction is caused by stones or inflammation, it is a benign disease and can be normalized with standardized treatment, which is not considered serious. If the total bilirubin is elevated due to a malignant tumor, it is more serious and may continue to be elevated, and usually requires surgical treatment to relieve the symptoms. Therefore, if the total bilirubin is elevated, after removing the physiological factors, it is recommended to go to the hospital as soon as possible to find out the cause of the elevated total bilirubin and take active treatment under the guidance of the doctor.