Underarm odor may be related to poor personal hygiene habits or congenital factors, such as fox odor. It is recommended to pay attention to personal hygiene, if necessary, through drugs, surgery for treatment. 1. Poor hygiene habits: usually exercise more, sweat too much, if you do not pay attention to personal hygiene, bacteria decomposition of sweat odor. It is recommended to wash in time after sweating to maintain skin hygiene, which can reduce the gathering of bacteria. Usually pay attention to diet, reduce the intake of stimulating food, can reduce sweat secretion. 2. Fox odor: Fox odor is also called stinky sweating, consider and genetic have a direct relationship, easy to occur in adolescence. Underarm sweat gland secretion function, sweat accumulation and bacteria contact, chemical reaction, produce odor. Aluminum chloride solution can be given, with antiperspirant effect. Potassium permanganate solution, with antiperspirant and astringent effects, can reduce the odor. You can also go to the hospital dermatology department, through the underarm injection of botulinum toxin, can reduce sweat gland activity, reduce underarm sweating. If necessary, through minimally invasive sweat gland excision, can achieve the role of the root of the odor sweating. It is recommended to pay attention to personal hygiene, if necessary, go to the hospital dermatology department for examination, to understand whether it is related to the odor sweating, if necessary, through the way of drug or surgical treatment.