Fire in the gums during lactation is one of the common clinical manifestations. It is mainly caused by the lack of attention to dietary residues and oral hygiene during lactation, which leads to bacterial growth and is related to infection around the gums. Therefore, it is important to pay attention to oral hygiene during lactation and avoid spicy, stimulating and fried foods. To clean your teeth after eating and drinking, it is recommended to rinse your mouth with warm boiled water or light salt water and a soft-bristled toothbrush. Clean your teeth after each meal to keep your mouth clean and hygienic to reduce the occurrence of swollen gums during breastfeeding. If swollen and painful gums occur during breastfeeding, there are two methods that can be used: first, you can use light salt water can rinse your mouth to relieve some mild symptoms. Second, if the gum swelling and pain is more obvious, you can use metronidazole or tinidazole mouthwash, containing a small amount, gargle around the swollen and painful gums, do not swallow, gargle after spitting out the gargle solution, which is safe. At the same time, during the breastfeeding period, pay attention to eat more fruits and keep the bowels swollen, which is good for maintaining oral hygiene and helps reduce gum swelling and pain.”