In some cases, the infection is aggravated by localized septicemia, which can be treated by incision and drainage, but it requires several changes of medication and the disease is prone to recurrence. For plasmacytoid mastitis, many patients show localized itching of the breast or nipple, or changes in the local skin such as desquamation, and localized palpable masses, usually inflammatory masses, with mild pain or vague pain. Ultrasound examination will reveal the presence of local inflammatory lesions, mainly due to local milk stagnation or ductal dilatation, secondary to infection, and in severe cases, the formation of obvious abscesses and even accompanied by high fever and other manifestations, during the treatment can be combined with the external use of Jinhuang San to improve the condition.