The main reason for nausea and vomiting after anesthetic reaction after surgery is that anesthetic drugs inhibit intestinal peristalsis, which leads to reflux of gastric contents. In the clinical situation of vomiting after anesthesia drug reaction: First, clean up the respiratory tract and keep it unobstructed, while avoiding the vomit in the stomach cavity from being accidentally aspirated into the trachea and causing aspiration pneumonia, which can lead to serious infection. Second, for mild nausea and vomiting reactions, antiemetic drugs such as metoclopramide and acid suppressants such as omeprazole can be administered intramuscularly or intravenously. If the nausea and vomiting are severe and the stomach contents are large, it is usually necessary to insert a gastric tube to draw out the stomach contents adequately to avoid aspiration leading to aspiration pneumonia or even asphyxiation.