Patients with heart failure have a poor prognosis,with high rates of rehospitalization and mortality.In recent years,significant progress has been made in the diagnosis,treatment,prevention,and management of heart failure.In March 2024,the"Chinese guidelines for the diagnosis and treatment of heart failure 2024"were released with great impact.The new edition of the guidelines updated the classification and staging of heart failure,and categorized treatment of patients with different ejection fraction,which has significant value in the clinical practice of heart failure.This article reviews the definition,classification,and staging of heart failure,as well as the standardized diagnosis and treatment of chronic and acute heart failure.