The symptoms of vertigo, which do not occur when lying flat, but occur when lying on the side, are considered to be episodes of benign paroxysmal positional vertigo, also known as otoliths. It is a transient paroxysmal rotation of the visual field that occurs when the head moves rapidly to a specific head position. Normally, the otolith is attached to the otolith membrane, and when the otolith is dislodged by the causative factor, the otolith will flow with the lymphatic fluid in the inner ear, stimulating the hair cells of the semicircular canal and causing severe vertigo, which lasts for a short time, not more than a minute, and can be completely relieved when the head position is not moving. During the dizziness, rotational nystagmus can be observed. Treatment is mainly by manual repositioning. 1-2 sessions of manual repositioning treatment can heal otoliths. However, otolithiasis is also a self-limiting disease, that is, it can be cured by itself without treatment, but the duration of the patient’s illness can be very long and cause the patient a lot of pain.