Underarm odor, also known as fox odor, is a special odor emitted from the patient’s armpits. The common causes of fox odor are as follows: i. Congenital heredity. Is the most common cause. Both parents have a person with fox odor, the probability of children suffering from fox odor significantly increased. Second, underarm sweat is not cleaned in time. Organic substances in the sweat, decomposed by the bacteria present on the surface of the skin, producing odor. Third, the consumption of food containing irritating odors. Such as garlic, onion, etc., the odor with the secretion of sweat and discharge. Fourth, the clothes are not breathable. Excessive secretion of sweat from the sweat glands in the armpits, resulting in a humid environment and a large number of bacteria reproduction. Fox odor can be cured through systematic and regular treatment. Commonly used treatment methods include direct surgical removal of sweat glands, minimally invasive, local aromatics, etc. Patients need to choose the right treatment method according to their own situation. Wear cotton breathable clothing and eat lightly.