Patients who do not sleep well may cause dizziness, the reasons include the following aspects: 1, if patients have previous hypertensive disease, poor sleep can easily lead to increased blood pressure fluctuations, patients will have dizziness, head swelling symptoms; 2, patients with cerebral arteriosclerosis, cerebrovascular stenosis and other diseases, no good rest, easy to induce cerebral vascular spasm, resulting in patients with cerebral blood supply deficiency aggravated, there will also be episodes of 3, the patient did not sleep well, brain nerve dysfunction after the brain fatigue is not completely relieved, the patient will also have dizziness, dizzy performance, but also accompanied by memory loss, inattention, mental depression, these brain function activity decline performance.