The cause of dilated cardiomyopathy is not yet clear, so early prevention is more difficult, but it is widely believed that cardiomyopathy is related to drug intoxication, metabolic abnormalities, autoimmune reactions, viral infections, genetics and other factors. Patients should pay attention to cardiac changes early in viral infections, and the treatment of dilated cardiomyopathy is mainly aimed at clinical symptoms. 1, first of all, we should pay attention to rest, avoid overexertion and increase the burden on the heart, especially patients with decompensated heart function and enlarged heart should rest for a long time to prevent the deterioration of the disease. 2, patients with combined heart failure can be treated with cardiotonic, diuretic and vasodilator drugs. As the patient’s myocardial damage is more extensive, treatment with digitalis and diuretics is effective. When low glomerular filtration, hydrochlorothiazide may not be effective and can be combined with diuretic treatment, and angiotensin-converting enzyme inhibitors are also effective, but it should be noted that when using drugs, it is necessary to start with small doses and gradually increase until the optimal dose is used to prevent hypotension. Our experts said that patients with combined heart failure can also choose beta-blocker therapy, the principle is based on chronic heart failure, adrenergic nerve hyperexcitability, beta receptor density downregulation, and the use of beta-blockers can make the harmful effects of adrenergic nerve hyperexcitability is removed, the beta receptor density in the myocardium upregulation. 3, patients with arrhythmia symptoms can be treated with antiarrhythmic drugs or electrical methods, especially patients with high atrioventricular block and rapid ventricular rhythm are at risk of sudden death and should take timely therapeutic measures. 4.Clinically, oral anticoagulants or anti-platelet aggregation drugs are often used to prevent embolic complications. 5, at the same time need to carry out some adjuvant therapeutic measures, such as the use of drugs to improve myocardial metabolism vitamin C, coenzyme Q10, cyclized adenosine acid, etc.. 6.Patients with long-term heart failure and ineffective medical treatment are recommended to undergo heart transplantation. After surgery, we should actively control infection and provide patients with nutritious food to strengthen their body and improve immunity.