Patients with dilated cardiomyopathy need long-term or even lifelong medication because dilated cardiomyopathy is an incurable disease that requires medication to properly control the onset of heart failure symptoms. The symptoms of heart failure due to dilated cardiomyopathy can easily recur, leading to repeated hospitalizations, often related to the patient's irregular medication use or arbitrary discontinuation of medication. Therefore, patients with dilated cardiomyopathy must take medication under a doctor's guidance for long periods, such as using diuretics and medication like sustained-release metoprolol, etc. At the same time, it is important to maintain good living habits, a low-salt diet, a good emotional state, and conduct moderate exercise under stable conditions.