Usually no discomfort, lying in bed with dizziness symptoms, the common causes are hypotension, anemia, cervical spine disease, Meniere’s syndrome, as follows: 1, hypotension: if the usual blood pressure is low, postural hypotension occurs at rest, due to a temporary cerebral artery supply deficiency after changing position; 2, anemia: can cause cerebral artery supply deficiency, dizziness, pale face, pestle finger, weakness 3, cervical spine disease: incorrect posture at rest can cause symptoms of dizziness, accompanied by neck discomfort, limb numbness and other symptoms; 4, Meniere’s syndrome: the cause is unknown, the main symptom is the appearance of vertigo, accompanied by nausea, vomiting and other symptoms, aggravated by activity. Patients are advised to eat lightly and exercise properly. It is better to check blood pressure, blood lipid and blood routine at the hospital to further confirm the diagnosis.