When a patient has left ear pain, two main conditions are considered: first, the patient’s left ear itself is inflamed, such as acute otitis externa, acute otitis media, and herpetic tympanitis; second, the patient’s left ear pain is caused by congestion and inflammation of the mucous membrane in the throat, which involves the patient’s left ear. Regardless of which of the above causes, all of them are caused by inflammation. Treatment requires active anti-inflammation and swelling, and patients can take oral cephalosporin antibiotics, such as cefixime capsules or cefixime dispersible tablets, and the patient’s drug allergy history needs to be clarified before using the medication. If it is because of the disease of the ear itself, you can put lomefloxacin hydrochloride ear drops in the ear, which can play the role of anti-inflammation and swelling, and the patient’s condition will improve after about 3 days of active treatment.