Dizziness, nausea, and vomiting after general anesthesia are common complications after general anesthesia, and their occurrence is related to the patient’s condition, the anesthetic drugs used, and the type of surgery. First of all, inhaled anesthetics, the most commonly used inhaled anesthetics at present is sevoflurane, and the incidence of postoperative nausea and vomiting is 3.67%. While the commonly used intravenous anesthetics such as fentanyl, etomidate, ketamine, etc., postoperative vomiting has occurred. Secondly, in terms of the type of surgery such as gastrointestinal surgery, postoperative gastrointestinal mucosa edema, gastrointestinal peristalsis is weakened or even disappeared, resulting in gastric retention and vomiting. Again, patients with a full stomach, intestinal obstruction and gastrointestinal decompression tubes are often prone to vomiting after surgery.