If a 12-year-old child has a fever, if he or she is in relatively good spirits, eats well and has normal bowel movements, he or she can drink more water, pay attention to rest, take vitamin C supplements, try to avoid going to crowded places to prevent cross-infection, and be alert to the phenomenon of dehydration and convulsions caused by high fever. If the fever is caused by a cold, you can take pediatric cold and flu granules orally, which can treat and relieve various symptoms caused by the cold. If the fever is caused by wind-cold, it can be treated by adding Jing Fang Defeat Poison San or Jing Fang Da Xie Tang, which has the effect of warming and relieving the symptoms. If the fever is caused by a wind-cold cold, it can be treated with Yin Qiao San plus or minus, which has the effect of cooling the exterior of the body. If the child’s body temperature exceeds 38.5℃, you can use antipyretic and analgesic drugs such as ibuprofen suspension or acetaminophen suspension, which can quickly reduce fever.