Congenital heart disease includes many kinds in some mild congenital heart disease can have no symptoms, but severe congenital heart disease has both obvious symptoms after birth. 1, cyanosis: cyanosis is the prominent manifestation of cyanotic congenital heart disease (such as large vessel misalignment, tetralogy of Fallot, etc.). It can persist after birth, or gradually become obvious three to four months after birth, and is most obvious in the lips of the mouth, finger (toe) nail bed, and the tip of the nose. The latent cyanotic heart disease (such as ventricular septal defect, atrial septal defect, arteriovenous ductus arteriosus) usually does not have cyanosis, but only appears when activity, crying, breath-holding or pneumonia, and persistent cyanosis can appear when pulmonary hypertension and right heart failure occur in late stages. 2, heart murmur: most congenital heart disease can be heard murmur, this murmur is relatively loud, rough, severe cases can be accompanied by tremor in the anterior chest area, the developmental deformity of the sternum. Most heart murmurs are detected by the doctor at the time of the visit. Some normal children may have physiological murmurs. Poor physical strength: Due to poor cardiac function, insufficient blood supply and hypoxia, seriously ill children have feeding difficulties in infancy, stopping after a few sips, shortness of breath, easy vomiting and profuse sweating, preferring to hold vertically, older children are reluctant to move, preferring to squat, easy fatigue after activity, paroxysmal dyspnea, severe hypoxia often fainting suddenly when nursing, crying or stooling, prone to heart failure. 4, prone to respiratory infections: most congenital heart disease due to increased pulmonary blood, usually prone to repeated respiratory infections, repeated respiratory infections and further lead to heart failure, the two often cause each other, become the cause of death of congenital heart disease. 5, poor development: congenital heart disease mostly has developmental delay, especially obvious in those who have cyanosis, serious intellectual development may also be affected. 6, other symptoms: congenital heart disease, such as enlarged left atrium or pulmonary artery compression of the recurrent laryngeal nerve, since childhood hoarse cry, shortness of breath, cough; combined with other malformations, such as congenital cataract, cleft lip and palate and congenital stupidity; ventricular enlargement can lead to anterior heart area bulge, thoracic deformity; persistent cyanosis can be accompanied by pestle finger, mostly formed 1 to 2 years after the appearance of cyanosis. If parents find that their children have the above symptoms, they should go to the hospital as soon as possible to confirm the diagnosis of congenital heart disease, the common methods of examination are X-ray, electrocardiogram, echocardiogram, heart catheterization and cardiovascular angiography when the heart to be. Once diagnosed with congenital heart disease, you should go to cardiac surgery as soon as possible and let the doctor decide the timing of surgery.