The ear is an important organ of the human body, including several important components such as the auricle, the external auditory canal, the middle ear, and the inner ear. Its functions include collecting and perceiving sound, and balancing function, as follows: 1. Collecting and perceiving sound: An important function of the human ear is to collect and perceive external sound. The auricle collects sound from the surrounding environment and transmits it through the external auditory canal to the eardrum, as well as the middle ear cavity auditory chain, and further to the inner ear 2. Balance function: An important function of the ear is the balance function, which is mainly played by the vestibular organ of the inner ear. If a patient has a disease condition in the vestibular organ of the inner ear, it may cause the patient to have symptoms of vertigo, a sense of visual rotation, and the inability to stand or walk.