Patients who experience dizziness in the morning and evening mainly consider the following causes: First, if it occurs during the change of head position, it is considered benign paroxysmal positional vertigo, which is commonly known as otoliths, and can be treated by doing a position test to clarify and reset by manipulation. The second aspect is that morning and evening dizziness may be caused by internal diseases, such as poor blood pressure control in patients with hypertension, which requires blood pressure monitoring to clarify the cause. Third, morning and evening dizziness may also be caused by postural hypotension, which usually occurs when the patient’s postural changes are large and violent. Fourthly, morning and evening dizziness in the elderly is mainly due to cerebral atherosclerosis and cerebral blood supply deficiency, which can be clarified by transcranial Doppler examination.