Common symptoms of neonatal preterm heart disease include shortness of breath, lack of energy, heart failure, and heart murmurs. 1. Shortness of breath. In newborns and infants, it is common that the child sucks weakly or feebly during breastfeeding, breathing is short and shallow, and often stops sucking due to insufficient gasping for air, and the child is often tired and sweaty but still can’t suck enough milk. 2. Lack of energy. Poor heart function or cardiac insufficiency, blood supply and oxygen will be insufficient, so the child is easily fatigued and wheezing after breastfeeding, crying and activities. 3. Heart failure. This is usually seen when the child has a serious heart defect, and the child is usually pale, tachycardic, dyspneic and has low blood pressure. 4. Heart murmur. Abnormalities can also be detected during echocardiograms and electrocardiograms. It is recommended that these symptoms need to be checked promptly.