If a patient suddenly has the symptoms of spinning head, the following aspects should be considered: First, if the symptoms appear during the change of head position, it should be considered benign paroxysmal positional vertigo, which is formed because the otolithic particles in the balance receptors are dislodged, and when the head position changes, the dislodged otolithic particles will stimulate the cell membrane of the semicircular canal, causing a person to have a brief episode of symptoms of sky spinning. In the second aspect, if the patient has persistent symptoms of dizziness and sky spinning with cold sweating, but flexible limb movement and accurate finger and nose, peripheral vertigo should be considered, and the common diseases include Meniere’s disease, vestibular neuronitis, and vaginitis. In the third aspect, if vertigo and spinning in the sky are accompanied by ataxia such as inflexible limb movement, it should be considered to be caused by lesions of the cerebellum and brainstem, such as cerebellar or brainstem infarction or hemorrhage.