Brain MRI shows ischemic foci that need to be treated. Ischemic foci are caused by ischemia and hypoxia in brain tissue due to insufficient blood supply to the brain tissue. In clinical practice, ischemic foci, including soft foci from previous infarcts or foci of chronic ischemia, need to be treated aggressively, whether they are old or new. If it is old foci, the risk of new cerebral infarction in the future is relatively high, need to actively take medication to prevent, mainly oral aspirin and other anti-platelet aggregation, as well as stabilization of fatty plaques statin drugs, but also actively adjust the blood lipids, glucose, blood pressure, etc., pay attention to comply with the instructions for the use of drugs. Pay attention to the ischemic foci of the situation should be timely medical treatment, so as not to affect the health of the body.