Underarm sweating and odor may be caused by physiological factors such as excessive exercise, and generally requires no treatment. It may also be caused by hyperhidrosis, axillary odor and other diseases, which can be improved by general treatment, medication and surgery. 1. Physiological factors: If you exercise for a long time, it may cause underarm sweating odor, generally no treatment. Daily bathing, changing clothes, pay attention to personal hygiene can be. 2. Hyperhidrosis: If the axillary sweating odor is caused by hyperhidrosis, eat a light diet and avoid being overly emotional. Patients can follow the doctor’s instructions for external use of aluminum acetate solution, tannic acid solution and other drugs, with astringent cleaning effect. Patients can also take sweat gland removal surgery, destroy sweat gland tissue, improve the situation of underarm sweating odor. 3. Armpit odor: armpit sweating odor may be caused by armpit odor, patients can follow the doctor’s instructions for external use of aluminum chloride anhydrous ethanol solution, inhibit the secretion of sweat. You can also take the axillary injection of botulinum toxin, blocking the local postganglionic cholinergic nerve fibers, reducing the secretion of sweat glands in the armpit. There are many reasons for the odor in the armpits, and it is recommended that patients go to the hospital for standardized treatment.