Fox odor and armpit odor are the same concept, both phenomena will cause the body odor, is a kind of irritating and unpleasant smell, diligent bathing and changing clothes can be reduced, serious cases can be treated by laser or surgery. The sweat excreted by the sweat glands (also known as parietal glands) in the armpits, vulva, and corners of the mouth is higher in fatty acids than the average person and is yellowish and thicker; when the fatty acids reach a certain concentration, they are decomposed by bacteria on the skin surface, mainly staphylococci, to produce unsaturated fatty acids and emit an odor. The odor is similar to that of the fox’s anal discharge, so it is often called fox odor.