The duration of dilated cardiomyopathy varies, with short cases dying within a year of onset and long cases surviving for 20 years or more. In the past, the 5-year survival rate was about 50%, but in recent years, due to the improvement of treatment, the 5-year survival rate has been significantly improved at home and abroad, and it can reach 65.5% to 75%. The main clinical manifestations of dilated cardiomyopathy are heart enlargement, heart failure, arrhythmia, thromboembolism and sudden death. Early symptoms of dilated cardiomyopathy are not obvious, and people with a family history of the disease should pay attention to their health status. Once symptoms of heart failure appear, such as fatigue and dyspnea, you should seek medical attention. In recent years, with the advancement of treatment, the prognosis of patients who actively cooperate with regular treatment has significantly improved. If you have dilated cardiomyopathy, it is recommended that you seek timely medical attention and treatment under the guidance of your doctor. Strictly follow the doctor’s instructions, take medication as prescribed, and review regularly to dynamically observe the progress of the disease.