Symptoms on the day of gastric polypectomy vary from person to person and may include symptoms of gastrointestinal bleeding, manifested by positive fecal occult blood or black stool, nausea, vomiting, and decreased digestive function. 1. Gastrointestinal bleeding symptoms: gastric polypectomy may have gastrointestinal bleeding symptoms, usually manifested as positive fecal occult blood or black stool, but vomiting blood is rare. 2. Nausea and vomiting: these are common symptoms. Nausea is often a precursor to vomiting, or it can occur alone. 3. Decrease in digestive function: there may be hidden pain in the upper abdomen, abdominal distension, poor appetite, etc. Therefore, the symptoms on the day of gastric polypectomy surgery generally vary from person to person. Less severe symptoms can be observed first, and when the symptoms are more severe, they should be relieved under the guidance of the doctor in time.