There are many causes of vomiting, dizziness and weakness, and the common causes are mainly the following: 1, cerebrovascular disease, common diseases such as cerebral hemorrhage, cerebral infarction of large area or cerebellum, subarachnoid hemorrhage and other diseases can cause increased intracranial pressure. The symptoms of nausea and vomiting, dizziness and impaired movement of the limbs need to be improved after head examination for clear diagnosis and targeted treatment. 2, otoliths, the disease is mostly seen in the change of position when dizziness, nausea, vomiting, visual rotation and other symptoms, each lasting less than a minute, through the change of position experiment can be clearly diagnosed, treatment needs to be carried out to relieve symptoms. 3, hypertensive encephalopathy, when blood pressure When blood pressure rises above the threshold of cerebral blood flow regulation, the symptoms of hypertensive encephalopathy can appear. The main manifestations are dizziness, headache, jet vomiting, weakness of limbs and even coma. The symptoms can be effectively controlled by immediate treatment such as controlling blood pressure and relieving brain cell edema.