Swelling after gastric polyp surgery may be caused by poor blood circulation, irregular diet and postoperative indigestion. 1. Poor blood circulation: Swelling after gastric polyp surgery may be caused by poor blood circulation in the body, poor blood circulation in the body usually appears cold hands and feet, dizziness and other symptoms, poor blood circulation in the body will make the body unable to discharge toxins and thus the phenomenon of generalized swelling. 2. Irregular diet: It is usually caused by the patient having one meal after another or overeating, and irregular diet usually causes immunity decline or malnutrition, which may lead to abdominal distension and generalized swelling and other symptoms. 3. Postoperative indigestion: It is usually due to the fact that the patient has been in a state of rest and recuperation after the operation, and the lack of physical exercise leads to gastrointestinal dysfunction, which will cause postoperative indigestion, thus leading to generalized swelling. It is recommended that patients go to the hospital for regular checkups after the operation, and standardize the treatment under the doctor’s guidance if generalized swelling occurs.