Postnatal checkups for newborn babies and regular health checkups at the hospital, heart murmurs can be mostly clear, but because some babies cannot hear their heart murmurs when they are born, and are only discovered when they are examined after full term or later, parents of babies should pay attention to their children from the following aspects, and should go to the hospital as soon as possible when the following symptoms appear 1, observe whether the infant’s skin is continuously cyanotic after birth; 2, whether the child has recurrent confusion; Deng Haiqing, Department of Cardiothoracic Surgery, Qinzhou Second People’s Hospital 3, frequent colds, whether there are recurrent infections in the respiratory tract, bronchus and lungs; 4, difficulty in feeding or the infant refuses to eat, choking and coughing, usually shortness of breath; 5, developmental delay, wasting, excessive sweating, children complaining of easy fatigue and poor physical strength; 6, mouth and lips, the The end of the fingers/toes are blue or long out of breath; 7, or the examination can see that there are congenital malformations in other parts of the body.