Children: developmental delay, difficulty in feeding, recurrent pneumonia, blue lips and mouth (especially more obvious after activity or crying), squatting after activity, etc.; Adults: chest tightness, panic, shortness of breath, dyspnea, hemoptysis after activity, low resistance, arrhythmia, anterior heart area pain, swelling of both lower limbs, etc. The above symptoms are common symptoms of heart disease. Once you have the above symptoms, it is recommended to see a cardiothoracic surgeon at the earliest possible time, and a doctor’s examination will clarify the heart murmur, or after an electrocardiogram or cardiac ultrasound examination with abnormal changes, you need to be hospitalized.