Acute cerebral infarction left thigh numbness is usually not serious. Numbness of the left thigh in patients with acute cerebral infarction is a normal symptom, often due to cerebral infarction on the right side of the patient’s brain. Whether it is the formation of cerebral thrombus, cerebral embolism, or cavernous infarction, there may be a decrease in sensation of the opposite limb as well as a decrease in muscle strength, and the patient will have numbness in the thighs, the severity of which is related to the lesion. If patients with cerebral infarction have numbness in the left thigh, they need to go to the neurology department of the regular hospital in time for examination to determine the development of the disease. For in the acute stage of the disease has met the thrombolytic indications, can choose thrombolytic therapy. In addition, antiplatelet drugs should be given, and if there is high blood pressure, it is also necessary to lower blood pressure, actively treat the primary disease, keep the respiratory tract usually, lower intracranial pressure to prevent infections and so on. Patients with cerebral infarction should pay attention to reasonable diet, control blood sugar, blood pressure, reasonable exercise, and maintain a healthy weight.