Otitis media is divided into secretory otitis media and purulent otitis media. 1. Secretory otitis media: It is a non-suppurative inflammatory disease, mainly characterized by fluid accumulation in the middle ear and hearing loss. Patients in the acute stage mostly have a history of cold before the onset of the disease, followed by ear pain and hearing loss, which may be accompanied by a sense of self-hearing enhancement. Preschool children show symptoms such as ignoring their parents’ calls, inattentiveness, and high volume while watching TV. In addition, patients with acute secretory otitis media may also experience a sense of occlusion or stuffiness in the ear, as well as intermittent tinnitus. In adults, symptoms such as the sound of air passing through water in the ear when the head moves or when yawning or blowing the nose may occur. Some patients in the chronic stage feel that their deafness worsens on cloudy days and decreases on sunny days, and ear pain is not obvious. 2.Purulent otitis media: Acute purulent otitis media mainly manifests as ear pain, tinnitus, hearing loss, bloody or purulent fluid flowing out of the ear, and severe ear pain can lead to sleepless nights, irritability, and crying in infants and children. It is also accompanied by systemic symptoms such as chills, fever, lethargy, and loss of appetite. Chronic suppurative otitis media has a long course, lasting months, years or even decades, during which acute inflammation can occur repeatedly, with mild symptoms, mostly only pus flowing from the ear, few systemic symptoms, and few symptoms in the resting phase. As mentioned above, the symptoms of secretory otitis media are mainly ear stuffiness and hearing loss, while those of purulent otitis media are mainly ear pain and systemic symptoms.