Cerebral infarction in the left basal ganglia region, judged by the extent, location and size of the infarction, may cause different degrees of symptoms. If it is an infarction in an important area, such as an infarction in the posterior branch of the internal capsule, it may cause more severe symptoms. If the infarct is only a nucleus pulposus infarct, the symptoms may be mild. If the infarct is small in size, it may be caused by infarction of a small blood vessel, a relatively thin blood vessel, and is usually treated with medication. If it is a relatively large area of cerebral infarction in the basal ganglia area, thrombolysis may be required in the acute stage. If the symptoms do not improve, the embolus may not be dissolved and early interventional treatment, such as stenting, is required.