Fever caused by milk stagnation is usually due to acute mastitis. It can be treated with oral Chinese medicine soup, and in the early stage it can be added and subtracted by Jing, Fang and Burdock soup, and in the stage of canker sore it can be added and subtracted by Tori San, and it can also be combined with massage and acupressure to dredge up the milk channels. Antibiotics can be used for symptomatic treatment, such as penicillin and cephalosporin. Oral Chinese medicines, such as Pu Di Lan Anti-inflammatory Oral Liquid, Blue Scutellaria Oral Liquid, Qing Kai Ling Granules, Shuang Huang Lian Oral Liquid, etc., can also be used to clear heat and remove toxins. Breastfeeding is not recommended when the milk is stagnant, or it may cause other adverse reactions such as fever, diarrhea and abdominal pain in the child. We should take a light diet, eat more green vegetables and fruits, eat less spicy, stimulating and greasy food, and avoid fish, shrimp and seafood to avoid causing aggravation of the disease. You can shorten the cycle and improve the efficiency by combining Chinese and Western medicine.