There is no specific data on the maximum life expectancy of dilated cardiomyopathy. The general 5-year survival rate after diagnosis is about 50%, and the main focus is on controlling the cause of the disease and targeting heart failure treatment. Dilated cardiomyopathy may be related to infection, inflammation, heredity, mental trauma and other factors, and usually has a poor prognosis. It may be asymptomatic in the early stage, with the main manifestations of dyspnea, decreased activity tolerance, and complications such as right heart insufficiency, arrhythmia, and thromboembolism may occur. If dilated cardiomyopathy is diagnosed, its 5-year survival rate is about 50%, and 10-year survival rate is about 25%. Treatment includes infection control, alcohol cessation, and treatment of corresponding diseases such as hypertension, etc. Meanwhile, drugs such as bisoprolol and isosorbide dinitrate can be used for intervention in the early stage to slow down the progression of heart failure, and it is recommended to go to the hospital for treatment in time, and to use the medication under the guidance of the doctor.