Some patients with cerebral infarction can recover their speech function, but some cannot. Cerebral infarction, also known as ischemic stroke, is caused by various cerebrovascular lesions, resulting in cerebral vascular supply obstacles, leading to local brain tissue ischemia, hypoxic necrosis, resulting in neurological deficits. When the location of cerebral infarction is in the speech center, speech function will be impaired, which can be manifested as unfavorable speech, speech inability, etc.. When speech dysfunction occurs, if it does not cause extensive necrosis of nerve cells, some people can recover speech function through rehabilitation exercises; if the damage and necrosis of nerve cells in the infarcted part is too much and too serious, which is irreversible, then the speech function can not be recovered as in the beginning. In the event of cerebral infarction, it is important to seek medical attention and active rehabilitation treatment to improve the prognosis.