First, the formation of armpit odor armpit odor, also known as oedema, is caused by the sweat excreted by the sweat glands of the patient’s armpit, by the decomposition of bacteria on the surface of the skin, mainly staphylococcus, producing unsaturated fatty acids and emitting odor. As the sweat glands secrete abundantly in adolescence, this disease is mostly seen in young adults. With age, the body’s aging, sweat glands also gradually degenerate, axillary odor symptoms can be reduced or disappear. About 50% of the patients have a family history of genetic predisposition. Second, the principle of surgery From the physiological anatomy, the sweat glands are located in the deep skin and fat layer, sweat ducts open in the upper third of the hair follicle, a few directly on the skin surface. Therefore, axillary odor surgery is to surgically destroy the sweat glands or cut off the sweat ducts and remove the glands, thus preventing the discharge of sweat and fundamentally achieving the purpose of getting rid of sweat odor. There are two common methods of axillary odor surgery: axillary skin excision and minimally invasive axillary odor radical surgery. 1, axillary skin excision: Principle: removal of sweat glands Method: make a shuttle incision along the axillary hair growth area, the incision should be deep to the dermis and separate the skin with a knife to reach the edge of the axillary hair, remove all the skin with axillary hair, and finally suture the incision. Efficacy: This method is a thorough treatment, but often due to excessive excision of skin, the tension at the incision is too great, which affects the healing, or the healing scar contracture, which easily produces pulling sensation and affects the movement of the upper limbs. And there may be scar formation, affecting the aesthetics, is basically not used. 2, minimally invasive axillary odor radical surgery: Principle: extensive separation of the dermis and subcutaneous fat, resulting in the breakage of sweat ducts and destruction of some glands to impede sweat discharge. Method: By designing one to two surgical incisions parallel to the axillary wall, the skin is separated from the subcutaneous tissue, and the subcutaneous fat tissue is removed with scissors or scrapers, so that the hair follicles and sweat glands are destroyed. Sutures are closed and tied, a rubber drainage strip is placed, pressure is applied, and the strip is withdrawn the next day. Postoperative antibacterial agents were used to prevent infection and the stitches were removed in 7 days. Efficacy: This method has a short incision, little damage, remarkable efficacy and no scar after healing. The curative effect is 95%. However, it should be noted that the surgical separation should be large enough and the scraping of the fat globules should be clean and thorough, otherwise the efficacy will be affected. In addition, pressure hemostasis should be complete and drainage should be unobstructed to avoid the formation of subcutaneous hematoma. This treatment may lead to complications such as skin necrosis.