How to quickly relieve dizziness and vomiting can be done by using promethazine hydrochloride to quickly relieve the symptoms of dizziness and vomiting in patients, just for the symptoms. But clinically it is crucial to find the cause of the patient’s dizziness and vomiting, and only by targeting the cause can the patient’s dizziness and vomiting be addressed at the root. If the cause of dizziness and vomiting is a sudden increase in blood pressure, the patient should be given antihypertensive drugs to control blood pressure smoothly in order to solve the problem of dizziness and vomiting at the root, such as giving oral telmisartan and amlodipine besylate. If the dizziness and vomiting are caused by cerebral vascular spasm or insufficient blood supply to the vertebral basilar artery, the patient should be given intravenous infusion of drugs to improve blood circulation, such as prostil, thromboxane, vincristine type of drugs, after the patient’s blood circulation is improved, the symptoms of dizziness and vomiting can be fundamentally solved.