Frontal ischemic foci mean small ischemic foci in the frontal lobe of the brain. The formation of ischemic foci is mainly due to the occlusion of blood supply in the arteries of the brain, especially in the distal end branches, resulting in the local brain tissue with impaired blood supply, and regional necrosis or demyelination changes, and the necrosis or demyelination area is very small to form ischemic foci. In clinical practice, there are usually no obvious symptoms, mainly when imaging examinations, such as head CT or MRI, are done, and the causes are related to long-term hypertension, hyperlipidemia, diabetes, migraine, smoking, alcohol consumption and other bad habits. Therefore, when ischemic foci are found, these risk factors should be examined and treated, and it is recommended that oral aspirin can be taken for prevention.