The absence of edema in dilated cardiomyopathy indicates that right heart function is fair and not particularly severe. Dilated cardiomyopathy with lower limb edema indicates that right heart insufficiency has occurred, which means that it has reached a very serious level. Most dilated cardiomyopathies are insidious in onset, generally asymptomatic in the early stage, and abnormalities are usually found during physical examination. In the progressive stage, there will be a decline in activity tolerance, nocturnal paroxysmal dyspnea, sedentary respiration, loss of appetite, abdominal distension, and lower extremity edema, and palpitations, dizziness, black haze, and even sudden death if combined with cardiac arrhythmia. In terms of treatment, the main therapeutic drugs in the early stage are β-blockers such as metoprolol, angiotensin-converting enzyme inhibitor captopril, and angiotensin receptor antagonist cloxartan, which can reduce myocardial injury, delay myocardial remodeling, and improve the prognosis. Patients with heart failure in the later stages of the disease can appropriately use diuretics such as furosemide, as well as cardiotonic, vasodilator drugs such as digitalis, etc. In the end-stage drug treatment is ineffective, only the option of heart transplantation. Dilated cardiomyopathy even without edema, but also under the guidance of the doctor for early, active, regular treatment.