The location of the eardrum in children, like the location of the eardrum in adults, is located in the deep innermost inner wall of the external auditory canal. Since children are not yet fully developed, the length of the external auditory canal is shallower than that of adults, and varies with the age of the child. The tympanic membrane separates the external auditory canal from the middle ear. The outer part of the tympanic membrane is the external auditory canal, and the inner part of the tympanic membrane is the tympanic cavity. The tympanic membrane is a translucent membrane that is oval in adults and round in children, and is located between the tympanic cavity and the external auditory canal. The anterior and inferior portions of the tympanic membrane are inclined inward at an angle of approximately 45-50° to the base of the external auditory canal, and the angle of inclination of the tympanic membrane is particularly pronounced in newborns to 5-month-old infants, where the tympanic membrane is inclined at an angle of approximately 35° to the base of the canal. The tense part of the tympanic membrane is concave inward in the center and is shaped like a trumpet, while the flaccid part is flatter. The tympanic membrane is an extremely thin, membranous tissue that is susceptible to direct, or indirect, injury, as well as acute suppurative otitis media, which can lead to perforation of the tympanic membrane and affect hearing.