Ischemic foci detected by brain MRI are usually not serious if they do not cause symptoms and affect brain function, but they need to be observed and checked regularly. If symptoms appear and brain function is affected, prompt medical attention and active treatment are required. With ageing, cerebral vascular elasticity decreases, cerebral vasospasm, which will lead to the emergence of scattered small ischemic foci, manifested as patchy T1 or isotropic T1 and long T2 signals on nuclear magnetic resonance, but clinically asymptomatic, can be seen in the normal elderly. Generally, the situation is not very serious, but need to pay attention to, regular examination. In daily life, pay attention to low-salt and low-fat diet and exercise diligently. If magnetic resonance examination can see cerebral artery ischemia, plaque formation, need to improve other tests such as lipid series, carotid ultrasound, etc., if not actively dealt with can cause cerebral infarction, etc., so more serious. Once detected, active intervention is needed, oral atorvastatin calcium tablets, aspirin, ginkgo biloba extract, etc. can be used to regulate lipids and stabilize plaques, antiplatelet, promote blood circulation and other treatments. Brain MRI found ischemic foci should be taken seriously, timely consultation with doctors, and standardized treatment under the guidance of doctors.