Sweating has a sour odor if you pay attention to personal hygiene and strengthen the care after the disappearance is normal, if the symptoms are more serious, affecting the normal work and life is not normal. 1. Normal: If you don’t pay attention to personal hygiene, long time without bathing, the skin surface will be planted some bacteria, after sweating, sweat and these bacteria chemical reaction will appear sour odor, but generally not particularly serious, after cleaning can be eliminated after odor, this situation is considered normal. 2. Not normal: (1) Fox odor: If there is a sour smell in the armpit area after sweating, it is considered to be fox odor, which is a hereditary disease, mainly manifested as a special pungent odor emanating from the armpits, and the symptoms will be more obvious in sports and summer time. (2) stinky sweating: stinky sweating is certain sweating parts have a special odor, may occur in the armpits, may also occur in the feet or perineum, general body surface skin parts have no obvious abnormality, but there will be a pungent odor. Sweating has a sour odor if you pay attention to personal hygiene or can not be resolved, you should go to the hospital in a timely manner to clarify the diagnosis, for the cause of the disease, standardized treatment.