Inclusion Criteria:  the diagnostic criteria for decompensation of liver cirrhosis of chronic viral hepatitis B formulated according to the Guidelines for Diagnosis and Treatment of Liver Cirrhosis issued by the Chinese Society of Hepatology in 2019 The diagnosis of sarcopenia group conforms to the Asian sarcopenia working group 2019 Consensus Update on the Diagnosis and Treatment of Sarcopenia Patients aged between 18 and 60 years old Patients with no history of drinking or abstinence for more than 1 year Voluntary participants with informed consent  Exclusion Criteria:  Other types of cirrhosis, such as hepatitis C, alcoholic cirrhosis, non-alcoholic fatty liver disease, autoimmune liver disease, etc patients with acute, chronic and acute liver failure (course <12 weeks) Other diseases which can lead to the secondary sarcopenia (chronic disease in heart, lung, kidney, brain, malignant tumor, etc) Neurodegenerative diseases or muscle degenerative diseases Perioperative patients Active exercise (PARS-3 exercise scale is greater than or equal to 20 points as active exercise Patients with incomplete data