Patients with a swollen external ear canal that hurts when touched are often clinically affected by inflammation inside the patient’s external ear canal or are associated with the formation of boils. In terms of treatment, patients can first use ciprofloxacin ear drops or tretinoin chloramphenicol solution for ear bath treatment, as well as norfloxacin ear drops and levofloxacin ear drops for anti-inflammation, preferably 2-3 times a day, which can effectively play the role of local anti-inflammation and swelling. If necessary, oral antibiotics can be taken to consolidate the treatment, such as cefprozil capsules and cefixime capsules. Before using the medicine, patients need to clarify whether they have any allergy history to the medicine to avoid allergic reactions. After a week or so of active treatment, the patient’s condition inside the ear should improve significantly. During the treatment period, the patient must keep the ear canal clean and avoid getting water.