In the severe winter season, pediatric wards in major hospitals across the country are full of small patients, many of whom are infants and children with congenital heart disease, mainly because of improper family care during the severe winter season and parents’ lack of understanding of the condition of congenital heart disease, which aggravates the burden on the infantile and fragile heart and lungs. There are many types of congenital heart disease, and according to the amount of blood in the lungs, they are divided into two categories: pulmonary congestion type and pulmonary ischemia type. The stimulation of cold has a significant effect on both types of heart disease. Heart and lungs are closely related “brothers”, heart problems will affect the lungs, and lung problems will also affect the heart. Congestive heart disease is due to a defect inside the heart cavity, the pressure in the left side of the heart cavity is greater than the pressure in the right side of the heart cavity, so that a large amount of blood from the left side of the heart cavity is shifted to the right side of the heart cavity through the defect, the right side of the heart cavity is connected to the lungs, resulting in too much blood in the lungs, within a certain range, the child can withstand, if encountered with cold stimulation, hands and feet and other peripheral vasoconstriction, the blood flow back to the heart increases, and the heart ejection of blood If the child is cold, the blood vessels at the end of the arms and legs contract, the blood flow back to the heart increases, and the resistance of the heart to eject blood increases, exceeding the compensatory function of the heart and lungs, the child appears shortness of breath, cough, irritability, cold limbs, sweating, and refuses to suck the milk; and the cold causes the child’s resistance to decline, which makes the virus and bacteria in the child’s respiratory tract multiply, causing fever, sputum and other symptoms of pneumonia, which may lead to serious consequences or even death if not treated in time. Pulmonary ischemic heart disease is caused by the narrowing of the pulmonary blood vessels and the lack of normal blood volume in the lungs due to poor development, and there is not enough blood in the lungs for oxygen and carbon dioxide exchange. The same cold will aggravate their condition and also complicate the lung infection, so understanding these basics, parents will know how to bring up their little ones with congenital heart disease during the severe winter season. How to raise a child with congenital heart disease in the severe winter season: First of all, the most important thing is the living environment, the temperature, humidity and clean air are crucial, the room temperature is controlled at about 20 degrees, the conditions can regularly turn on the humidification steam or put a basin of water in the room, regularly let the indoor air circulation, prohibit parents from smoking in the room where the child lives, minimize the number of people in the room, especially parents with colds or other diseases contacting the child. The second is how much the child should wear. The second is how much the child wears. Many parents are afraid that their children will get cold and cover them especially much, and when they visit the clinic, the child is sweating all over, which makes the child extremely uncomfortable and aggravates the disease. The standard for how much to wear: warm hands and feet, no sweat on the body. Therefore, parents should increase or decrease the child’s clothes according to the 24-hour temperature change. Thirdly, observe the child’s performance closely. If the child is quiet, eats milk normally, urinates and defecates normally, and has no fever, it means there is no big problem. If the child is crying and restless, find out the reason for this: Is the child hungry? Is it hot or cold? Is the diaper not clean? Or the condition has worsened? The fourth feeding problem, within 6 months of the baby, breastfeeding, breastfeeding in addition to balanced nutrition, convenience, clean, but also to soothe the child’s emotions, the recovery of cardiopulmonary function has great benefits. If the child is weak in suckling, the mother should assist in expressing milk to ease the burden. If breast milk is not available, pick a suitable formula. Remember to have small and frequent meals, that is, do not feed enough at one time, because overfeeding a child with heart disease will increase the burden on the heart. Add supplementary food appropriately, juice and water are indispensable, especially for cyanotic children, whose blood is more concentrated and water is important for him.