Breastfeeding pregnant women who are overworked and undernourished can easily lead to a decrease in body resistance, which can lead to colds. When breastfeeding, mothers should take a full range of nutrition: a more complete variety of foods, better quality protein, rice flour, fruits and vegetables, etc. They should also get enough sleep. Take care to increase your clothing and not to expose your breasts and back when breastfeeding. This will promote milk production on the one hand, and improve resistance on the other. Most colds are caused by viral infections, which can heal on their own within a week. Drinking plenty of water can help to flush out toxins from the body and promote the improvement of cold symptoms. Fresh fruits rich in vitamin C are recommended to improve immunity and resistance to illness, such as oranges and kiwis. If the body temperature exceeds 38.5 degrees Celsius, physical cooling or oral antipyretics can be administered. Check blood count, CRP and PCT to determine whether it is a viral or bacterial infection. If it is a bacterial infection, oral antibiotics can be taken appropriately; if it is a viral infection, oral administration of Shuanghuanglian Oral Liquid and Banlangen Granules is recommended. Extra care should be taken when breastfeeding, and the room should be ventilated to avoid transmitting the cold to the baby. Once the condition is serious or infected to the baby, you should immediately go to a regular hospital and see a specialist. Do not delay the disease. (The specific drugs mentioned in the article should be consulted by a specialist)