Rumbling in the stomach may be a normal physiological phenomenon, but may also be caused by ulcerative colitis, intestinal obstruction and other factors. 1. Normal physiological phenomenon: prolonged starvation or consumption of food that produces too much gas may also cause the stomach to rumble, if there are no other abnormalities, the elimination of the above triggers can be improved on their own. 2. Ulcerative colitis: it may be related to environment, heredity and other factors, which will make the stomach rattle for a long time, and may be accompanied by abdominal pain, diarrhea, constipation, nausea and other symptoms. 3. Intestinal obstruction: when there is an intestinal obstruction, due to the prolonged presence of food in the intestines, it is easy to cause rattling, which may be accompanied by nausea, vomiting, abdominal distension, abdominal pain and other symptoms. If your stomach is always rattling and accompanied by other abnormalities, it may be caused by other diseases, so it is recommended to consult a doctor in time for examination and treatment.