Lying down vertigo consider the following situations: 1, related to positional change, when suddenly change posture, posterior circulation ischemia leads to dizziness. 2, cervical curvature straightening, intervertebral stenosis, caused by insufficient blood supply to the posterior circulation leads to dizziness. 3, benign positional vertigo, i.e., otolithic patients, dizziness occurs when positional change. 4, tumors, head tumors, early manifestations of dizziness, head swelling and other head discomfort symptoms. 5, orthopedic diseases, cervical osteophytes compressing the vertebral artery leads to insufficient blood supply. 6, blood pressure, high blood pressure or low blood pressure can also appear. Orthopedic diseases, cervical osteophytes compress the vertebral arteries leading to insufficient blood supply to the posterior circulation.6 Blood pressure, high blood pressure or low blood pressure can also occur. When lying down dizziness, it is recommended to go to a regular hospital in time to ask a professional doctor for examination, diagnosis and effective symptomatic treatment, take the right measures in order to receive good clinical results.