A boil on the external auditory canal takes about 7 days to heal with prompt, standardized treatment. The exact time is related to the severity of the condition, physical condition and response to treatment. External auditory canal boils mostly occur in the outer 1/3 of the cartilage of the external auditory canal, mostly due to ear digging, swimming, middle ear long-term pus damage or irritation of the skin of the external auditory canal, systemic chronic diseases such as diabetes mellitus, long-term constipation, endocrine disorders, anemia, etc., resulting from Staphylococcus aureus infection; mainly severe ear pain, often radiating to the same side of the head and face, and the pain is aggravated when the mouth is open, chewing, yawning. In the early stage of the disease, single or multiple small boils show limited redness, swelling and elevation, and the pain is most obvious at this time; when the boils mature, the elevation becomes soft or the pus head is exposed; when the boils burst, a small amount of pus and blood flow out of the external auditory canal, and the ear pain is then reduced. After the diagnosis of external auditory canal boil, we should do the pus culture and drug sensitivity test, according to the results, choose the appropriate drugs for local or systemic medication; generally in 7 days can be good; but there are individual differences, the physical condition of the weaker, the treatment is not timely may take a longer time to heal. During the treatment period, you can’t swim or dive, can’t wear earphones or earplugs, etc.; pay attention to rest, can’t eat spicy food, and if you have any discomfort, you should go to the hospital in time and consult the doctor for guidance.