Dizziness, nausea and vomiting are mostly considered as hypoglycemia, cerebral blood supply insufficiency, otolithiasis and other diseases. 1. Hypoglycemia: Hypoglycemia is usually caused by insufficient food, abnormal secretion of pancreatic islet cells, etc. When plasma glucose level decreases to 2.8mmol/L in adults, related discomforts, such as dizziness, vomiting, and fatigue, etc., can occur. 2. Insufficient cerebral blood supply: Insufficient cerebral blood supply is generally due to vertebral artery-type cervical spondylosis, diabetes mellitus, hyperlipidemia, and cerebral arterial atherosclerosis, which leads to changes in blood flow. Patients will experience dizziness, nausea, vomiting and other uncomfortable symptoms when they move. 3. Otolithiasis: Otolithiasis is a common peripheral vestibular disease, when the patient’s head position changes, it can induce obvious dizziness, and the duration is generally less than a minute. In addition to dizziness, patients will also be accompanied by nystagmus, nausea and vomiting and other vestibular nerve dysfunction. There are many reasons for dizziness and nausea and vomiting, so it is recommended that patients seek timely medical attention to determine the cause of the disease and then choose the appropriate treatment measures.