If a child has a fever of forty degrees, the first thing is definitely to take antipyretic medicine. Because at forty degrees, the child will definitely have a series of symptoms such as muscle aches, headache, mental softness, poor appetite, etc. Then at this time, oral antipyretics are needed to reduce the fever. In addition, you can take some Chinese medicine to help clear the fever and cool down the temperature. In addition, you need to find the cause of the fever, if the fever is viral, then there is no special medicine. If the fever is caused by a bacterial infection, oral antibiotics are needed under the guidance of a doctor, or even intravenous antibiotics if the inflammatory index is very high. In addition, if the child has a fever accompanied by cough symptoms, you can take cough medicine, accompanied by indigestion and diarrhea, you can take probiotics and some digestive drugs.