8 months baby armpit temperature 37.8 ℃ belongs to low fever, may be upper respiratory tract infection, gastroenteritis and other causes, can be relieved by physical cooling, medication. Axillary temperature 37.8 ℃ belongs to low fever, you can first through the physical cooling, you can give the child to drink more water, promote the body metabolism, more urination, take away the heat to help reduce fever, you can also give the child to use warm water to wipe the body, wipe repeatedly can play a role in cooling. Be careful to observe the body temperature, measure the baby regularly, pay attention to the baby’s mental state, prevent the body temperature from continuing to rise, and do a good job of baby care. When the temperature exceeds 38.5 degrees and the child has obvious symptoms of discomfort, ibuprofen, acetaminophen and other drugs can be given to reduce fever, timely fever to the baby can relieve the discomfort caused by fever, reduce crying. If the fever is caused by bacterial infection, you need to follow the doctor’s instructions to use amoxicillin and other antibiotic treatment to effectively control the fever, to avoid recurrence. It is recommended to go to the hospital in time to check the cause of the fever, and then according to the cause of targeted treatment.