Due to the high ambient temperature and immature function of sweat glands, the skin of newborns may develop a light red rash. Simple treatment can be done by undressing the newborn, bathing in warm water, or applying prickly heat powder. 1. The main way to reduce the temperature of the environment is to open windows and undress the newborn. 2. Newborns should be treated with localized skin cleansing and perspiration, and should be bathed and dressed more frequently. Special attention should be paid to the heat rash, should try to use warm water to deal with. 3. Newborns can be put into the appropriate amount of eau de toilette when bathing, in order to sterilize, itching, anti-inflammatory, after the bath can also be used to keep newborns dry and clean body surface to prevent heat rash. In short, according to the cause of the disease to appropriate methods for timely treatment, but if the treatment of 12 hours after the newborn heat rash has not subsided, should be sent to the hospital as soon as possible to clarify the cause of the disease for treatment.