There are many reasons for dizziness and vomiting. In most cases, it may be a nervous system problem. For example, if you don't have a good rest, lose sleep, and your brain doesn't have enough rest time, you will feel dizzy and vomiting. Others may have poor vestibular function, such as Meniere's disease, otolith, or vertigo, and may also have dizziness and vomiting. Some people may have fever and cold, or dizziness and vomiting caused by high blood pressure. Some patients may suffer from cerebral hemorrhage, cerebral infarction, brain tumors, etc., which will lead to dizziness and vomiting.