Asymptomatic left middle cerebral artery occlusion requires treatment. Left middle cerebral artery occlusion is asymptomatic, indicating that the occlusion is gradual rather than acute, and the collateral circulation has been formed to compensate for the occlusion, so there are no clinical symptoms. Although asymptomatic, the main cause of occlusion is atherosclerosis, which requires medication to prevent stenosis and occlusion of other blood vessels. Commonly used medications include anti-platelet aggregation such as aspirin, plaque stabilizing medications such as atorvastatin, as well as the control of other related risk factors, such as diet, blood lipids, smoking, and lifestyle habits. It is recommended that patients seek early medical attention and under the guidance of the doctor for appropriate treatment, do not blindly self-medication.