The time to recover from hemianesthesia in cerebral infarction can be recovered in 3-6 months at the earliest, but it also depends on the extent and severity of cerebral infarction, as well as the degree of early treatment and aggressiveness. Generally speaking, for patients in the acute phase of cerebral infarction, especially within 6 hours of hyperacute phase, if there is time to rush to the hospital and do the relevant examination, with surgical indications, the treatment of thrombolysis and embolization can be carried out to open the blood vessels and improve cerebral ischemia in the early stage, which can effectively improve the symptoms of brain function, and the numbness symptoms appearing in this case can be recovered relatively quickly, generally in about 3 months. If the opportunity of thrombolysis and clot removal is missed in the acute stage, the recovery may be a bit worse, and corresponding treatment should be carried out, such as using the drugs butalbital and edaravone that improve microcirculation, which can remove oxygen free radicals and save the semi-necrotic brain tissue as much as possible, thus improving the brain function. Together with the subsequent rehabilitation exercises, as well as acupuncture, tui na, massage and physiotherapy, most of the numbness symptoms can be recovered in about six months, but some of the sequelae will be left behind, which is relatively common. Also need to follow medical advice to give aspirin, atorvastatin and other preventive treatment. There are also some more severe patients who miss the best time for thrombolysis and clot removal, and the degree of treatment, aggressiveness and rehabilitation are not enough, and develop severe numbness symptoms, which may last for life. In addition, there is another kind of numbness caused by thalamic syndrome after cerebral infarction, in which thalamic infarction forms abnormal neural loops, resulting in numbness or abnormal sensory pain in the contralateral limb, as well as the sensation of ants crawling, etc. This is a complication that needs to be controlled by medication to alleviate the symptoms, but it can also persist for a long time.