There are many causes of pustules in the armpit, and there are many treatment options, mainly the following: First, local infection caused by Staphylococcus aureus to form a boil, that is, an abscess, you can use topical pidomod cream, erythromycin ointment, ichthyolipid ointment applied to the abscess, it will take about 7-10 days to play a significant effect. Second, medical iodophor wet compress, you can use medical gauze or cotton ball dipped in 75% of the medical iodophor wet compress at the abscess, 2-3 times / day, each time for about 30 minutes, about 7 days will play an obvious effect. Thirdly, oral anti-inflammatory medication is also known as antibiotics, such as roxithromycin tablets, cefixime capsules, etc., about 7 days will have an improvement, during the treatment period must avoid spicy, greasy and stimulating food, do not drink, smoke, pay attention to rest, light diet.