For cerebral infarction leg weakness, it takes about two weeks to six months to get full recovery clinically. For cerebral infarction leg weakness, considering that the patient has mild cerebral infarction, active treatment such as antiplatelet aggregation, anticoagulation, fibrin lowering, blood circulation activation and oxygen free radical scavenging can be given to the patient in the acute stage. If the patient’s blood vessels are in good condition and the collateral circulation is well opened, the patient’s leg weakness will be relieved more quickly and can be recovered in about two weeks after the acute treatment. However, if the patient’s vascular atherosclerosis is heavy, the blood vessels are narrowed, the opening of the collateral circulation is not good, and the patient’s leg weakness is not significantly reduced even after the acute treatment, the patient needs rehabilitation treatment. For the first six months after the cerebral infarction is the golden period of rehabilitation, it is recommended that patients should carry out active exercises under the guidance of professional rehabilitators, and after the exercises, the symptoms of leg weakness of most patients can be significantly improved clinically.