Nine-month-old baby’s fever may be related to infectious and non-infectious factors, which can be handled and treated by physical cooling and medication. At the same time, it is important to consult a doctor to clarify the cause of fever. Nine-month-old babies with fever, if the general condition is good, the temperature does not exceed 38.5 degrees, can be taken to physical cooling, such as the head of the antipyretic patch, warm water baths and so on. If the baby’s body temperature exceeds 38.5 degrees, or accompanied by obvious discomfort, should be given timely medication to reduce fever, so as not to cause pediatric convulsions caused by high fever. Commonly suitable for pediatric antipyretic drugs are acetaminophen and ibuprofen, etc., but there may be nausea, vomiting and other adverse reactions, need to strictly follow the doctor’s instructions to take. There are many causes of fever in nine-month-old babies, if the fever persists, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.