Baby one and a half years old fever 38.9 ℃ belongs to high fever, mainly to the general treatment and drug treatment, at the same time should be timely medical care, in order to clarify the cause of the disease, standardized treatment. 1. General treatment: baby if fever 38.9 ℃, usually pay attention to let the baby drink more water, can promote the baby urination, in addition to the need to use hot towels to wipe the baby’s palms, feet, armpits, etc., to help the body dissipate heat. 2. medication: the body if the fever has 38.9 ℃ represents a high fever, need to give timely treatment of antipyretic drugs, such as ibuprofen, acetaminophen, etc., followed by the need for symptomatic medication. If it is a bacterial infection, antibiotics such as cefixime and amoxicillin need to be used. The cause of the baby’s one and a half year old fever of 38.9 ℃ may be related to a variety of reasons, it is recommended to consult a doctor for timely examination in order to clarify the cause of the disease and standardize the treatment. All of the above medications are recommended to be taken under the guidance of a doctor, and should not be used on their own.