[Guidelines for the diagnosis and treatment of acute-on-chronic liver failure (2025 version)].

Acute-on-chronic liver failure (ACLF) is one of the leading causes of mortality among patients with chronic liver disease. Potentially reversible, ACLF requires precise clinical classification to facilitate accurate diagnosis, targeted treatment, and comprehensive management. Based on the latest research findings and clinical evidence, the Severe Liver Disease and Artificial Liver Group and the Nutrition and Regeneration in End-Stage Liver Disease Group, Chinese Society of Hepatology, Chinese Medical Association, together with multidisciplinary experts, have jointly compiled China's first guideline for the diagnosis and treatment of ACLF. The guideline aims to provide guidance for the diagnosis, treatment, and individualized management of patients with ACLF in clinical practice.