The symptoms of vertigo while lying down and turning over are clearly related to the head position, and are considered to be paroxysmal benign positional vertigo, also known as otolithosis. Because the otolith particles on the otolith membrane are dislodged, the dislodged otoliths will flow with the inner ear lymphatic fluid as the person’s head position changes, and when the cell membrane of the semicircular canal is stimulated, the patient will have sudden and severe dizziness with visual rotation, and in severe cases, even nausea and vomiting. When the patient’s head is held still, the dizziness and visual rotation can be relieved quickly, usually in less than one minute, and a rotational fluttering of the eye can be seen when the vertigo attacks. The treatment can be given by repositioning, and usually it can be cured in 1-2 times.