Acute otitis media is divided into acute suppurative otitis media and acute non-suppurative otitis media. The causes of acute otitis media may include bacterial infection, Eustachian tube dysfunction, immune response, etc. It is recommended to consult a doctor in time for symptomatic treatment. 1. Bacterial infection: common causative organisms include Streptococcus pneumoniae, Haemophilus influenzae, Streptococcus b hemolyticus, Staphylococcus, Pseudomonas aeruginosa and so on. 2. Eustachian tube dysfunction: mainly including mechanical obstruction and dysfunction. Mechanical obstruction is common in nasopharyngeal tumors, adenoid hypertrophy, hypertrophic rhinitis, lymphatic tissue hyperplasia and other diseases. Dysfunction is mainly caused by the muscle contraction weakness of the opening and closing of the Eustachian tube and poor elasticity of the cartilage of the Eustachian tube. 3. Barometric injury: Barometric otitis media is caused by the rapid change of pressure in the surrounding environment of the patient’s middle ear injury. The rapid elevation of flying and diving can also cause this disease. 4. Allergic reaction: Inflammatory mediators in the allergic reaction will make the Eustachian tube pharyngeal opening and mucous membrane congested and edematous, with increased secretion, which may cause acute secretory otitis media. Earache, hearing loss suggest timely consultation, diagnosis and standardized treatment.