The symptoms of dilated cardiomyopathy in infants include: 1. tightness of breath and dyspnea, whether in infants or adults with dilated cardiomyopathy, the clinical manifestations of tightness of breath and dyspnea may also be accompanied by cyanosis of the lips, pale skin, weakness, dizziness and other signs of hypoxia, and if the brain is hypoxic, dizziness, headache, coma and babbling. 2. The clinical manifestations of cough and sputum in the lungs, sputum can be white sputum or yellow sputum, easy to cough or not easy to cough up. 3, infant dilated cardiomyopathy may also appear irritable, crying, loss of appetite, do not want to eat milk, fever, increased body temperature, edema of both lower limbs and other clinical manifestations.