Sudden fever and coldness in children may be caused by viral colds, gastrointestinal colds, etc. According to the specific temperature, physical or medication can be chosen to lower the temperature, and the cause of the fever should be clarified to give targeted treatment. Sudden fever and coldness in children may be caused by viruses and other pathogenic microbial infections, or gastrointestinal colds caused by the accumulation of food in the body of children. When children have a fever, if the body temperature is not more than 38.5 degrees, you can use lukewarm water to wipe the skin, as well as the use of pediatric antipyretic patches and other means of physical hypothermia, and at the same time pay attention to the body’s warmth to avoid being cooled down. If the child has a fever and the temperature exceeds 38.5 degrees, you can choose ibuprofen suspension, acetaminophen tablets and other antipyretic medicines to lower the temperature treatment under the advice and guidance of the doctor. Symptomatic antipyretic fever at the same time should be obvious cause of fever, if it is a viral cold caused by fever, generally take symptomatic treatment can be, serious can take pediatric aminophenol xuanamin granules and so on. If the fever is caused by gastrointestinal cold, you can take Bifidobacterium bifidum triphalaenum and other medications, drink more water and rest during the period of medication. If children have a sudden fever and feel cold, and do not get effective relief, they should go to the hospital in time to check the symptomatic treatment, to avoid affecting the health of children.