When children have fever in hot weather, it is important to keep the ambient temperature within the appropriate range because the brain center is not well developed at a young age and the body temperature is easily increased by the rising ambient temperature. Also pay attention to drinking the right amount of water to replenish water, children with fever and hot weather can lead to an increase in non-significant water loss, and in severe cases, dehydration can occur, thus aggravating the fever. After the above treatment, the body temperature should be monitored in a timely manner, and when the body temperature >38.5℃, symptomatic treatment should be given to reduce fever in a timely manner. If the mental state is good after the fever subsides, most of them are caused by viral infections, so you can take care of them at home and observe them, because viral infections are self-limiting diseases, if the mental state is still poor after the body temperature returns to normal, you need to go to the hospital in time.