The baby has been low fever 37 degrees 5 to 37 degrees 8 belongs to low fever, common causes include physiological factors such as drinking milk, etc., can also be caused by pathological factors such as acute upper respiratory tract infections, etc., treatment methods include physical cooling, close observation, medication and so on. 1. Physiological factors: babies can have a temporary increase in body temperature after drinking milk or after exercise, at this time you can give physical cooling, such as warm water to wipe the body, by taking away the body’s heat to cool down, and at the same time, let the baby drink more warm water or juice to replenish the water and vitamin C. 2. Acute upper respiratory tract infection: baby immunity is low, by the external pathogen infection will appear fever and other symptoms. In addition to physical cooling, clear bacterial infection, given antibiotics anti-infection treatment, such as cephalosporin; viral infection, available antiviral drugs anti-viral treatment, such as oseltamivir and so on. In addition to the above treatments, babies with low-grade fever need to be taken to the hospital in time to identify the cause of the disease, and according to the specific circumstances of the disease, corresponding treatment should be given.