1. Cyanosis: appears early, half of them exist at birth, and most of them start within 1 month. As the age and activity increase, the cyanosis gradually worsens. The cyanosis is generalized, if combined with the arterial catheter failure, there are differences in the purple, the upper branch cyanosis is heavier than the lower limbs. Parents should take their children to a regular hospital in time to avoid delaying their child’s condition once they find bruising. If you have any questions before going to our hospital, you can contact me by phone to consult the consultation process and precautions. 2, congestive heart failure: 3 to 4 weeks after birth infants show symptoms of progressive congestive heart failure such as feeding difficulties, excessive sweating, shortness of breath, large liver and fine wet rales in the lungs. The infant is often stunted. 3. Physical examination findings: early appearance of pestle-like fingers and toes. The heart may have no obvious murmur after birth, but there is a single loud 2nd heart sound, which is from the aortic valve closing sound near the chest wall. If there is a large ventricular septal defect or large arterial duct or pulmonary artery stenosis, etc., the murmur produced by the corresponding malformation can be heard. If the arteriovenous duct is not closed, a continuous murmur can be heard at the second intercostal space on the left edge of the sternum; if the ventricular septal defect is combined, a full systolic murmur can be heard at the third or fourth intercostal space on the left edge of the sternum; if the pulmonary artery stenosis is combined, a systolic jet murmur can be heard at the upper edge of the left edge of the sternum. When the murmur is loud, it is often accompanied by tremor. Heart failure with pulmonary hypertension usually occurs early in those with large septal defects, but cyanosis is evident in those with pulmonary stenosis, while heart failure is rare.