Most of the causes of cerebral ischemia and hypoxia are due to insufficient cerebral blood supply and cerebral atherosclerosis.1. Patients can take oral medications such as lipid regulating and plaque stabilizing drugs such as atorvastatin calcium tablets, resulvastatin, simvastatin to regulate lipids and stabilize plaque. Patients should take oral anti-platelet aggregation drugs, which are commonly used clinically as bai aspirin, while if the patient has stomach disease, 2. If you cannot take oral aspirin, you can take oral clopidogrel hydrogen sulfate to anti-platelet aggregation. If the patient has problems in these areas, antihypertensive and hypoglycemic drugs and drugs to reduce homocysteine should be taken orally. 4. If cardiogenic diseases cause cerebral ischemia and hypoxia, such as frequent premature ventricular contractions, the patient should take oral drugs to improve arrhythmia, such as mexiletine.