Leg numbness may be a manifestation of cerebral infarction, and attention should be paid to the duration of leg numbness. If the patient has unilateral leg numbness, it may be a small area of cerebral infarction, such as patients with radiocoronal cerebral infarction and lacunar cerebral infarction, and cranial CT examination can make a clear diagnosis. If the patient has cerebral infarction, timely treatment should be given, including antiplatelet aggregation, neurotrophic as well as improving blood circulation treatment. Commonly used neurotrophic drugs in clinical practice include edaravone, cytarabine, cerebroprotein hydrolysate and piracetam; drugs to improve blood circulation mainly include safflower, panax ginseng, salvia and ginkgo biloba preparations; antiplatelet agents mainly apply aspirin or clopidogrel. Risk factors should also be controlled, for example, if the patient has a history of hypertension, oral amlodipine and amlodipine benzoate should be given to lower blood pressure. If the patient has diabetes mellitus, oral metformin, Reglanet or oral Bystolic or Glibenclamide should be given promptly. Insulin therapy can also be given when oral medications are not effective in lowering blood sugar.