Babies can be breastfed when they have a fever. Babies can eat breastmilk normally when they have a fever. Breastmilk contains a lot of immune substances that can help babies fight against diseases and recover as soon as possible, which cannot be replaced by any other formula milk. Breastmilk contains a lot of water, and you can increase the frequency of breastfeeding when your baby has a fever to provide sufficient energy while replacing the water lost from the fever. When your baby has a fever, you need to monitor your body temperature closely. When the body temperature is <38.5℃, you can help to reduce the fever by physical methods such as reducing clothing and lowering the room temperature appropriately. When the temperature exceeds 38.5 ℃ greater than six months of age can use ibuprofen fever, less than six months of age need to follow the doctor's instructions for the use of drugs, rapid changes in the condition, it is recommended that timely medical treatment. Fever can be caused by many reasons, if it is a viral infection, the main symptomatic supportive treatment, if it is caused by bacterial infection, it is necessary to use antibiotics such as cefaclor. All of the above drugs need to be used under the guidance of a doctor, avoid self-medication. There are many causes of fever in babies, and it is recommended to consult a doctor in time to be evaluated and treated by a specialist.