Five-month-old baby after 13-valent pneumonia vaccine fever, if the body temperature does not exceed 38.5 ℃, and the mental state is good, you can give the baby more water, with physical cooling and other methods to lower the temperature; on the contrary, you can take medication, if necessary, seek medical treatment. Body temperature does not exceed 38.5 ℃ can be used to warm wet towel wipe the child’s palms, feet, armpits, groin, neck, these large blood vessels rich in parts, in order to achieve the effect of cooling. You can also give your baby more water to accelerate the discharge of urine, which has a certain role in promoting the decline of body temperature, but also to replenish the water taken away by sweat. When the body temperature is more than 38.5 ℃, you can also let the baby cool down through the above methods, and at the same time need to use antipyretic drugs under the guidance of the doctor, such as ibuprofen suspension drops, etc., by taking antipyretic drugs the child’s body temperature can be reduced to a certain extent. Be careful to avoid unauthorized use of medication, so as not to cause adverse effects. If the child’s body temperature fever persists more than 38.5 ℃ or more, it is recommended to consult a doctor in a timely manner, with the help of the doctor to clarify the cause of the disease, and targeted treatment or treatment.