Application of Traditional Chinese Medicine in prevention and treatment of chronic viral hepatitis

INTERVENTION: Group A:Routine therapy on western medicine + support treatment + Traditional Chinese medicine Therapy ;Group B:Routine therapy on western medicine + support treatment ; CONDITION: B18.106 Severe chronic and acute‐on‐chronic hepatitis B PRIMARY OUTCOME: Mortality;Complication Rate; SECONDARY OUTCOME: Improvement rate in clinical symptoms and signs according to TCM criteria;Model for end‐stage liver disease (MELD) scale;Laboratory test and auxiliary examination result; INCLUSION CRITERIA: 1. In‐patients diagnosed as acute‐on‐chronic liver failure or chronic liver failure based on hepatitis B or hepatitis B cirrhosis; 2. Patients with hepatitis B or hepatitis B cirrhosis infected by HAV, HCV or HDV; 3. Voluntarily participate this trial and sign the Inform consent.