Hepatitis B dry mouth and bitterness cannot be used to judge whether the disease is serious or not, but need to be judged by liver function tests, hepatitis B virus quantitative tests. If patients with hepatitis B have symptoms of dry mouth and bitterness, it may be caused by low daily water intake, irrational diet, or reflux of bile, which can not be used to directly determine whether hepatitis B is serious or not, but needs to be analyzed through scientific tests, such as liver function tests, hepatitis B viral quantification, and color ultrasound of the liver. If the patient’s bilirubin, transaminase and other elevations are more obvious, and the liver ultrasound shows manifestations of liver fibrosis, cirrhosis and other diseases, this situation is more serious. In addition, severe hepatitis B often shows obvious weakness, loss of appetite, loose stools and other symptoms, and may also appear spider nevus and other manifestations. Hepatitis B patients with dry mouth and bitter mouth should inform their doctors in time.