Hepatitis B active phase generally refers to hepatitis B virus carriers or hepatitis B patients with abnormal liver function, commonly abnormal hepatitis B five serological test indicators, liver function biochemical indicators, imaging results, pathological examination results, etc. The virus replication is more active and infectious during this period, as follows: 1. Clinical manifestations: symptoms in the acute stage are weakness, anorexia, deepening of urine color, pain in the liver area, jaundice, etc.; chronic hepatitis symptoms are not prominent, generally manifested as weakness, abdominal distension, anorexia for grease, vague pain in the right upper abdomen, etc.; 2. Examination results: abnormal hepatitis B five indicators are seen in the active stage of hepatitis B, most notably positive hepatitis B virus core antibody;. The active stage can be accompanied by obvious elevation of glutamic aminotransferase and glutamic oxalacetic aminotransferase, and in severe cases, elevated total bilirubin and direct bilirubin can be seen; uniform swelling of the liver and mild enlargement of the spleen can be seen by ultrasound, CT or MRI; hepatocytes can undergo degeneration and necrosis, and inflammation and exudation can be seen. For patients diagnosed with active hepatitis B, the main treatment is antiviral drugs, such as interferon, nucleoside analogs and anti-inflammatory and liver-protective drugs. During the active phase of hepatitis, patients should be hospitalized or isolated at home to rest, move appropriately and avoid exertion; ensure dietary nutrition, try to choose easily digestible and vitamin-rich food, avoid high-protein and high-fat diet, and prohibit smoking and alcohol to avoid increasing the metabolic burden on the liver.