Yawning in patients with cerebral infarction is a manifestation of ischemia and hypoxia of brain tissues. The main reasons are as follows: 1, the area of brain infarction is large, forming obvious cerebral edema and cranial hypertension performance, which can cause severe ischemia and hypoxia of brain tissue, and patients can appear yawning. 2, the infarct lesion involves the cortex or brainstem, causing changes in consciousness, resulting in brainstem upward reticular activation system disorder, and patients can show symptoms such as frequent yawning and drowsiness. 3, brain infarction patients themselves exist sleep apnea syndrome, which leads to mental atrophy and frequent yawning during the day. apnea syndrome, such patients have obvious hypoxemia at night, leading to mental atrophy during the day and frequent yawning.4. More serious cerebral infarction can cause lung infection and type II expiration, which can lead to carbon dioxide retention or even pulmonary encephalopathy, and carbon dioxide inhibits the cerebral cortex thus leading to yawning symptoms. For patients with cerebral infarction who yawn frequently, they should be given treatment such as dehydration to lower cranial pressure, brain cell protection, nourishing nerves, improving brain metabolism, and if necessary, ventilator-assisted respiratory therapy.