Hepatitis B, known as viral hepatitis B, is an infectious disease caused by hepatitis B virus infection with liver lesions as the main cause. The clinical symptoms depend on the clinical typing and severity of the patient, and the following forms are common: a. Acute jaundiced hepatitis The duration of the disease is shorter than six months, and the pre-jaundice manifests as general weakness, nausea and vomiting, anorexia and abdominal distention, and pain in the liver area. The jaundice period is characterized by deepening urine color, jaundice (skin, mucous membranes, eyelids yellow staining), liver and spleen size, pain and discomfort in the liver area. In the recovery period, patients gradually lose all kinds of uncomfortable symptoms, jaundice subsides, and liver function returns to normal. Acute hepatitis without jaundice is shorter than six months, except for jaundice, other clinical manifestations are similar to jaundice, the onset of the disease is slower, the symptoms are milder, and recovery is faster. Chronic hepatitis has a duration of more than half a year, and mild cases show weakness, dizziness, loss of appetite, aversion to oil, yellow urine, and discomfort in the liver area. Some cases may have no signs and symptoms. In severe cases, there are obvious or persistent symptoms of hepatitis with liver disease face, liver palms, spider nevus, splenomegaly, repeated or persistent elevation of transaminases, and decreased albumin. In moderate cases, the symptoms and signs are between mild and severe. Fourth, heavy hepatitis (liver failure) A series of manifestations of liver failure appear; extreme weakness. Severe gastrointestinal symptoms and neuropsychiatric symptoms such as drowsiness, irritability, coma, etc. Jaundice is progressively aggravated and liver odor, hepatorenal syndrome, fluttering wing-like tremor, etc. may appear. In summary, patients with hepatitis B have loss of appetite, nausea and vomiting, liver discomfort and other liver impairment as the main clinical manifestations, the specific manifestations of which depend on the clinical typing of the patient.