“Infant muffled fever syndrome” mostly occurs in infants under 1 week of age, especially newborns who have just been born. Although the physiological activities of infants have begun, but the respiratory, thermoregulatory center is not sound, poor adaptability to the external world, if the clothing is too ambiguous or masked sleep, will be due to high temperature and sweating, pale, high fever, convulsions, coma, and may even affect the development of the nervous system; such as the baby coma time is too long, the number of convulsions is too often, it will cause intellectual stagnation, epilepsy and other serious sequelae. The situation is particularly serious, and even death due to respiratory failure. So the cold season infants should not cover the excessive warmth, should not cover the electric blanket, can not cover the head in the quilt, hot water bag should be away from the skin. When once the “infant muffled fever syndrome”, should be immediately unbuttoned, dry sweat, reduce parcels, high body temperature can be warm water bath, exacerbate the condition at the same time to clear the mouth and nose secretions. Severe cases should be sent to the hospital, to prevent the mouth and nose cover and suffocation. This disease is mainly caused by giving children excessive warmth or cover too long. At home to the child is too tight cover, too thick; living indoor temperature is too high or when going out to the child wrapped too much, too tight can occur. Generally occur in the cold season, November to April each year for the peak incidence. Newborns or small infants of the body surface area is relatively larger than adults, therefore, heat dissipation is faster than adults, if covered too long or excessive warmth, the temperature around the child’s body will rise sharply, and at this time too much influence due to wrapping the heat dissipation and make the body in a state of hyperthermia. At this time, the human skin on the small blood vessels can appear compensatory expansion, in order to accelerate heat dissipation through the skin evaporation, that is, sweating and breathing faster, so the child will sweat a lot, and even dehydration. In addition, high fever when the body metabolism increases, oxygen consumption increases, coupled with the lack of fresh air inside the quilt, can also lead to hypoxia in children. How to treat Infantile Muffled Heat Syndrome? Parents who find their children because of overheating suddenly high fever, sweating, screaming, convulsions, coma, respiratory difficulties, will be panicked, do not know how to deal with. Cooling down and reducing fever are the basic measures of treatment. Parents should first remove the cause of the fever, evacuate the hot environment, let the child breathe fresh air as soon as possible, and send the child to the hospital as soon as possible for treatment. The child’s temperature is very high and should be cooled down quickly. It is best to use physical cooling methods, such as the use of ice pads, warm water baths, etc. Do not use sweating medicine, so as not to sweat too much to aggravate the deficiency. Rapid exposure to fresh air is essential for treatment. Oxygen administration can increase the partial pressure of blood oxygen, blood oxygen saturation and blood oxygen content, and improve the hypoxic symptoms and respiratory status of the body. In addition to the above treatment measures, it is necessary to send to the hospital immediately.