One and a half year old baby fever 38.2 degrees ate antipyretic medicine to reduce and then fever, at home need to pay attention to in the antipyretic treatment at the same time need to clarify the cause of the disease, and give targeted treatment. Fever is a common symptom of childhood, for 1.5 year old children with fever, the speed of the body temperature back to normal is related to the state of the disease and choose the right way to reduce fever. At the same time for the cause of the treatment is also very important for the recovery of body temperature. Recurrent fever in one-and-a-half year old babies is mostly considered to be related to the following factors. If the respiratory tract infection caused by bacterial infection, which is most common in this age group, requires active anti-infective treatment with antibacterial drugs such as cefaclor and cefuroxime. If the human herpesvirus type 6 or 7 causes acute rash in young children, it is a self-limiting disease and generally does not require special treatment, but when it causes severe symptoms, it can be treated with drugs such as ganciclovir as prescribed by the doctor. In the case of rheumatic immune diseases such as juvenile idiopathic arthritis, the disease can start at any age, but there are two peaks of the disease, i.e., from 1 to 3 years old and from 8 to 10 years old, at which time immunosuppressant treatment is needed; in the case of hematological tumor-related diseases, chemotherapy, bone marrow transplantation and other treatments are needed. All of the above drugs need to be used under the guidance of a doctor, avoid self-medication. There are many other causes of recurrent fever in one-and-a-half year old babies, and it is recommended to consult a doctor in time to be evaluated and treated by a specialist.