Underarm odor is due to the secretions of sweat glands in the armpit area are decomposed by bacteria to produce an unpleasant odor, can be removed using medication (such as formaldehyde solution), surgical treatment, general treatment and other methods. 1. medication: patients can use formaldehyde solution, nylon powder, aluminum chloride anhydrous ethanol solution, etc., can play a good role in antibacterial antiperspirant, but also in the armpit injection of botulinum toxin, through the inhibition of secretion of sweat glands to achieve deodorant effect. 2. Surgery: patients can also go to the hospital for surgery to remove the sweat glands in the armpits to achieve the effect of completely removing the odor. 3. General treatment: patients should keep their armpits clean and dry, change clothes often, take baths frequently and shave armpits regularly to reduce the number of parasitic bacteria. It is recommended to go to the hospital in time to see a doctor for odor, and use drugs or other treatments under the guidance of the doctor.