After gastroscopic resection of polyps, dietary considerations include water fasting, gradual transition from fluids to semi-fluids and soft foods after surgery. 1. After gastric polyp resection, the time of fasting can be decided according to the size of the wound and the bleeding condition. For single small polyp, it can be fasted for 1 day, with a small amount of water; for larger wound or ESD resection, the time of fasting should be decided according to the specific condition, and some patients may need gastrointestinal decompression. Then gradually transition from liquid to normal diet according to the medical advice, pay attention to whether there is bleeding and perforation and other complications. 2. On the first day after the operation, you can try to eat fluids, avoiding too cold and too hot stimulating foods, and observe whether there are symptoms of gastric discomfort. 3. If there is no stomach pain or bloating after the first day of eating, you can start to change from liquid food to semi-liquid food, soft food, pasta and other light diet, and finally transition to normal diet. The patient’s bowel movements and abdominal symptoms should be closely observed. After removal of gastric polyps, nausea, abdominal distension, and even black stools may be due to bleeding from the stomach reaction caused by inaccurate hemostasis after removal, and this condition requires internal medicine treatment.