Insufficient blood supply to the brain does not matter, but it should be taken seriously. If patients have cerebral insufficiency, they should monitor their blood pressure, blood sugar, blood lipids and blood homocysteine; if their blood pressure is elevated, they should be treated with blood pressure regulation, and the commonly used drugs in clinical practice are amlodipine, enalapril, benazepril, nifedipine extended-release tablets, nifedipine controlled-release tablets and irbesartan or valsartan, etc. If patients have elevated blood lipids, they should be treated with active lipid regulation and plaque stabilization. Commonly used drugs include atorvastatin, simvastatin, resulvastatin, etc. For patients with diabetes mellitus, active blood glucose control, commonly used drugs are metformin and insulin. For patients with hyperhomocysteinemia, active treatment should be given. Commonly used drugs in clinical practice include vitamin B6, folic acid tablets and methylcobalamin, adenosine cobalamin, etc.