There are many causes of axillary odor, mainly the following: 1, axillary hyperhidrosis: autonomic nerves lead to abnormal secretion of small sweat glands; 2, axillary tinea: microbial infection leads to; 3, axillary odor: abnormal secretion of sweat glands and skin bacteria decomposition of sweat components caused. The etiology of axillary odor Axillary (to be precise, also including the navel, external auditory canal and vulva) sweat secreted by abnormal components of the sweat glands is decomposed by bacteria on the surface of the body to produce odor, similar to the process of odor produced by bacteria decomposition of live fish after being exposed to the air after death. Armpit odor treatment method 1, mild: diligent cleaning and clothing change Advantages: their own operation, fast; Disadvantages: daily operation is time-consuming and laborious. 2, moderate: topical drugs to suppress sweat and bacteria or perfume cover Pros: their own operation, fast; Disadvantages: the frequency increases, the effective time is shortened, even several times a day, the smell after mixing is also unpleasant. 3, heavy: take invasive treatment, including injection, laser, surgery.