The left basal ganglia infarction is generally not serious, usually manifested as focal neurological deficit symptoms, different parts of the symptom is not the same.1, the left basal ganglia cerebral infarction belongs to the cavernous cerebral infarction of the good parts of the infarction. If the site of infarction is in the internal capsule, it will lead to unfavorable activity of the right limbs, tongue deflection, speech clumsiness and other symptoms, accompanied by numbness of the limbs.2. If it is in the thalamus location of the footholds, it will be manifested as decreased sensation of the right limbs, and there may be spontaneous thalamus pain, for example, there is a pain of the right limbs.3. If it is in the non-functional area of the basement ganglia region of the site of the infarcts, the patient often does not have the symptoms appear.