Sudden dizziness and vomiting, the main consideration is benign positional vertigo, acute cerebrovascular disease, sleep deprivation and other aspects of the cause, as follows: 1, benign positional vertigo: patients suddenly appear dizziness, vomiting, mainly related to positional changes, such as lying down after sitting up or left and right turn over, the duration is very short to a few seconds to tens of seconds based on the consideration of the patient there is benign positional vertigo, this time can be related to manipulation repositioning, the patient symptoms can be relieved. Vertigo, this time can be related to the manipulation of the reset, the patient’s symptoms can be relieved. 2, acute cerebrovascular disease: if the elderly patients, previous hypertension, diabetes, obesity, suddenly appeared dizziness, vomiting, this time to be alert to the patient may have acute cerebrovascular disease, need to go to the hospital to do a cranial CT or magnetic resonance imaging. 3, sleep deprivation: the patient appeared dizziness, vomiting, to ask the patient whether there is a lack of sleep, have a sleep deprivation, the patient should be asked to do a sleep deprivation, the patient should be asked to do a sleep deprivation. To ask the patient whether there is a lack of sleep, there are some long-term sleep deprivation of patients, there may be dizziness, vomiting performance.