There are many reasons why poor sleep causes cerebral blood supply deficiency. When patients have poor lifestyle, irregular work and rest, biological clock disorders or excessive mental and psychological stress, resulting in sleep disorders, it will cause the patient’s sympathetic nerves to be in an excited state, which will easily cause certain effects on blood pressure, resulting in increased blood pressure fluctuations, causing the patient’s arteries to be in a long-term The patient’s arteries are in a state of prolonged constriction, which can easily cause cerebral vasospasm and other problems, so the patient will also show symptoms of dizziness due to insufficient blood supply to the brain. After the patient’s blood pressure rises, it is also easy to cause atherosclerosis of the cerebral arteries, resulting in low elasticity of the patient’s blood vessel wall, and the narrowing of the blood vessel lumen will slow down the flow rate of cerebral blood supply, which will also lead to insufficient blood supply to the brain. In clinical cerebral insufficiency of blood supply is not good, must be adjusted in a timely manner.