Acute suppurative otitis media usually leads to perforation of the eardrum and pus outflow, resulting in significant relief of symptoms such as ear pain and fever. When there is a sharp increase in pain in the ear, fever, chills, vomiting, convulsions, diarrhea and meningeal irritation, and hearing loss is obvious, the inner ear examination reveals that the ear drum is all red, thickened and bulging outward, and the normal identification marks are no longer distinguishable; even small perforations of the tympanic membrane are visible, but pus cannot flow out easily, and pressure pain in the mastoid area is obvious. This suggests poor drainage of pus and the need for tympanotomy.