The clinical manifestation of feeling spinning in bed is very common. For clinicians, the first condition, the occurrence of spinning, is clinically called vertigo. The most common cause of vertigo is benign paroxysmal positional vertigo, which is also known as otolithiasis. It is a sensation of intense vertigo caused by the dislodgement of the inner ear stone into the semicircular canal, which stimulates the semicircular canal with the change of body position. The second type of vertigo is cervical spondylosis, which is a clinical condition called cervical vertigo or vertebral artery cervical spondylosis, in which the sequential changes of cervical spine cause tortuous vertebral artery and affect the blood supply of vertebral artery, resulting in insufficient blood supply to the hindbrain. In a small number of patients, atherosclerotic lesions of the posterior circulation vasculature suddenly produce severe vertigo due to insufficient blood supply. Once the symptoms of vertigo appear, you should seek medical attention immediately, either at the neurology or ENT clinics, so that a specialist can make a judgment.