Children with a fever of 37.8 ° C is a low fever, can be taken to lower the body temperature, nutrition and hydration, appropriate rest and other treatment measures. 1. Reduce body temperature: Since the body temperature of 37.8 ° C is low fever, you can usually take physical cooling measures, such as the use of cold towels, ice packs and other cooling, through conduction to dissipate heat. If the body temperature continues to rise above 38.5°C, medication such as ibuprofen and acetaminophen should be taken under the guidance of a doctor. 2. Supplementary nutrition and water: children can be given high-calorie, high-protein, high-vitamin, easy-to-digest fluid or semi-liquid food to supplement the body’s consumption of fever and improve the body’s resistance, and can be appropriate to drink more water to replenish the water consumed by fever. 3. Appropriate rest: rest can reduce the body’s energy consumption, is conducive to the recovery of the child, so the child may be appropriate to reduce the activities, appropriate rest, should maintain a suitable room temperature, quiet environment, air circulation, in order to provide a suitable rest environment. When a child has a fever of 37.8°C, parents are advised to take the child to the doctor in time and follow the doctor’s instructions. The above medications need to be used under medical supervision.