Breastmilk is rich in antibodies, which usually help babies to defend themselves against pathogens, replenish the lack of water in their bodies and resist the cold. Whether a mother can breastfeed her baby during a fever needs to be judged according to the causes of the fever and the physical condition of the mother: 1. Cold: caused by upper respiratory tract infection, mainly transmitted through the respiratory tract and not through breast milk. If the body temperature is below 38.5℃, breastfeeding is possible without the application of antibiotics and other drugs harmful to the baby, and usually does not cause adverse effects on the baby. When breastfeeding, mothers are advised to wear masks and wash their hands regularly to avoid transmission of the virus to the child through the respiratory tract. If the temperature exceeds 38.5℃ and you have taken antipyretic or anti-inflammatory drugs, antiviral drugs, etc., you need to stop breastfeeding temporarily and drink a lot of water during the period to promote the metabolism of the drugs, and then breastfeed according to medical advice after the drugs have been metabolized. 3, other: such as puerperal infection, urinary tract infection and other diseases caused by fever, temperature less than 38.5 ℃, the symptoms of infection is mild, you can continue to breastfeed. If the infection is more widespread and serious, and has been treated with drugs, it is recommended that breastfeeding be considered after the infection is cured. Breastfeeding is a special period, if fever occurs, it is recommended that patients go to the hospital in time to determine the cause of the disease and then treat it under the guidance of the doctor, do not take medication without permission to avoid adverse effects on the mother and fetus.