Many people only know that the ear is an organ of hearing and that problems can cause deafness. In fact, the ear has another very important function: it senses changes in the body’s position and motion, and is an important organ responsible for the body’s balance. The otolithic membrane on the surface of the otoliths, which are tiny calcium carbonate crystals invisible to the naked eye, is called otoliths. In some cases, such as senile degeneration, inadequate blood supply to the inner ear, vagal concussion, otitis media, ear surgery, and blockage of the anterior branch of the vestibular artery, among many others, the otoliths can be dislodged due to metamorphosis of the oval capsule. The three semicircular canals in the inner ear, which are responsible for balance, are connected to the ellipsoidal sac, and the semicircular canals primarily sense rotational angular acceleration. When the otolith is dislodged, it may fall into the semicircular canals or even become lodged in the potbelly ridge at the expanded end of the semicircular canals. If the patient sits up, lies down, or turns his head, the movement of the otolith will drive the flow of endolymphatic fluid to stimulate the potbelly ridge and produce a violent sensation of vertigo. There are many theories about the mechanism of otolithogenesis, but it is still in the exploratory stage, but otolithogenesis can be divided into primary and secondary types according to the possible causes. Pathological conditions may also be seen.