Early manifestations of dilated cardiomyopathy include dyspnea, loss of appetite, arrhythmia and so on. 1. Dyspnea: Dyspnea is a common symptom in the early stage of dilated cardiomyopathy, and after the disease occurs, it will lead to obvious dyspnea when carrying out light activities. Some patients may experience paroxysmal dyspnea at night, accompanied by symptoms of left ventricular dysfunction such as upright breathing. 2. Loss of appetite: Dilated cardiomyopathy can present with gastrointestinal congestion, which is a manifestation of heart failure and manifests as gastrointestinal discomfort. As gastrointestinal stasis leads to indigestion, the patient may have no interest in food and no desire to eat, and may be accompanied by abdominal distension. 3. Arrhythmia: Due to the enlargement of the heart chambers, the electrophysiology of the heart is changed, which usually occurs in the early stage of tachyarrhythmia, and is also accompanied by palpitations, dizziness, blackness and other problems, and even sudden death. It is recommended to consult a doctor for relevant examinations in time, and according to the specific situation, under the guidance of the doctor, carry out symptomatic treatment.