Cerebral infarction is a common and frequent disease in neurology, mostly occurs in middle-aged and elderly people, and is an acute ischemic cerebrovascular disease. Most patients with cerebral infarction can be clinically cured if they can be given correct treatment in time. A proportion of severe patients may have signs and symptoms of neurological deficits. For patients with cerebral infarction, early restoration of blood supply to the ischemic hemispheric zone and application of effective cerebral protective drug therapy within the treatment time window are very important to reduce the disability rate of cerebral infarction. The therapeutic time window includes the reperfusion time window and the neuroprotective time window. The reperfusion time window is usually within 3-4 hours and no more than 6 hours after the onset of stroke. For patients with progressive stroke, there may be a corresponding extension. The neurocytoprotective time window encompasses part or all of the reperfusion time window and includes the time window corresponding to all neuroprotective therapies, which can extend up to hours or even days after onset.