If a mother has a fever of 38 degrees while breastfeeding, it is generally not recommended to continue breastfeeding her baby to avoid adverse effects on the baby. Usually, fever in breastfeeding women is caused by pathogenic infections, and breastfeeding at this time may cause the baby to be infected by pathogens, which may lead to colds, depression and other uncomfortable manifestations. In addition, if the poor flow of milk leads to milk stagnation, when the secondary bacterial infection will cause mastitis, it will also cause fever symptoms, when the milk quality is poor, if continue to breastfeed, the baby may develop gastrointestinal inflammation, which will cause diarrhea, fever and other symptoms. Therefore, the mother should stop breastfeeding and change the feeding method after finding a fever of 38 degrees, and can temporarily feed with formula. At the same time, you can take physical cooling, such as wiping the body with water or applying antipyretic patches, in order to achieve the purpose of cooling. If the temperature continues to rise, medication with fewer side effects can be applied under the guidance of a doctor if necessary, and breastfeeding is recommended until 3 days after the medication is stopped. In addition, in daily life, the mother should ensure a regular routine, keep the room ventilated, pay attention to balanced nutrition, exercise appropriately to strengthen the body’s resistance, and reduce the use of drugs during breastfeeding.