Cerebral infarction is known as cerebral infarction, and the mental decline caused by it is often difficult to recover, but its progress can be controlled through active treatment. Cerebral infarction will cause ischemia and hypoxia in brain tissue, and prolonged ischemia and hypoxia will cause damage to nerve cells in brain tissue, which are non-renewable cells, and the damage is usually irreversible, so it is usually difficult for patients to recover from mental decline after cerebral infarction. If intravenous thrombolysis is carried out in time after cerebral infarction, and the treatment is effective, cerebral blood flow is restored, combined with the later rehabilitation exercise, some patients can recover well, and generally there will be no obvious after-effects. If patients with cerebral infarction show symptoms of mental decline, it is recommended to consult a doctor in time, and further progress can be prevented through active treatment.