Cerebral infarction, i.e., cerebral infarction discharge or nausea and vomiting, may be due to posterior circulation cerebral infarction, elevated intracranial pressure, secondary neuritis, and other causes. If patients with cerebral infarction experience nausea and vomiting, it is recommended to consult a doctor in time for examination. 1. Posterior circulation cerebral infarction: Posterior circulation cerebral infarction mainly includes posterior cerebral artery issued by vertebral basilar artery, as well as posterior inferior cerebellar artery, anterior inferior cerebellar artery and so on, which mainly innervate the cerebellum and brainstem area. If this region is infarcted, symptoms such as dizziness, nausea and vomiting will appear, and corresponding sequelae will remain for some time after discharge from the hospital. 2. Elevated intracranial pressure: edema will be aggravated 3 to 5 days after cerebral infarction, and it will reach its peak on the 5th day, which will cause elevated intracranial pressure at its peak, thus leading to headache, accompanied by nausea and wanting to vomit. 3. Secondary neuritis: after cerebral infarction, it will cause the decline of one’s own immunity, which may lead to infection, causing vestibular neuronitis, thus the symptoms of nausea and vomiting. However, it cannot be ruled out that it is caused by other factors. It is recommended that the patient should consult the doctor in time to find out the cause of the disease, and the doctor should give targeted treatment after clarifying the cause of the disease.