In life, if you suddenly experience swelling and pain in the left ear, consider acute otitis externa or secretory otitis media. Acute otitis externa is often caused by patients digging their ears or getting water into the external ear canal when washing hair or bathing. For treatment, patients can use levofloxacin ear drops in the external ear canal to locally reduce inflammation. Otitis media is often secondary to upper respiratory tract infections. After a cold, the patient’s nose is particularly runny, and the Eustachian tube is involved when blowing the nose hard, leading to the formation of otitis media. The treatment of otitis media generally requires active oral antibiotics, clinically more commonly used is cephalosporin, but before using the drug need to clarify the cephalosporin there is no history of allergy to the drug. Patients also need to take oral eucalyptus-pinene enteric soft capsule, to promote the drainage of the fluid in the middle ear cavity to the outside. Normally about a week, the patient’s condition will have obvious improvement, otitis media patients must be actively treated to avoid the development of chronic.