Cerebral ischemic focus is a manifestation of cerebral atherosclerosis, which is not a major disease and is commonly seen in people over 50 years of age, and is often overlooked in the early stage due to the lack of obvious clinical symptoms. Ischemic foci in the brain are caused by the lack of blood and oxygen in brain cells, resulting in edema of brain cells, and are commonly seen in patients with underlying diseases such as atherosclerosis. Some patients may have no symptoms or only have dizziness or headache, which is often overlooked. However, if the disease is not taken seriously, with the development of the disease, serious clinical manifestations such as hemiplegia, aphasia and incontinence may occur. Therefore, cerebral ischemic focus is not a major disease, but if the symptoms are not taken seriously and the disease continues to develop to a more serious degree, it will become a major disease. Therefore, CT and MRI of the head should be performed for this disease, along with the clinical symptoms, to make a clear diagnosis. For patients who have been clearly diagnosed with cerebral ischemic foci, if there are no obvious discomfort symptoms, no treatment is usually needed and regular review is sufficient. For patients who have already developed obvious symptoms, they need to follow medical advice for standardized treatment.