Pooping on a full stomach may be caused by physiological factors, or it may be caused by acute gastroenteritis, chronic colitis, hyperthyroidism and other disease factors. Physiological factors are normal and do not require treatment; disease factors require treatment. 1. Physiological factors: some people will have the urge to have a bowel movement after eating, which may be caused by the individual’s bowel habits and is normal. 2. Disease factors: patients with acute gastroenteritis may want to defecate after eating, and may also be accompanied by diarrhea, abdominal pain and other symptoms; chronic colitis, too much food into the stomach, stimulate the gastrointestinal tract leading to increased intestinal peristalsis, which can cause defecation after eating; hyperthyroidism due to an increase in thyroid hormones, the body is in a high metabolic state can also appear after eating defecation. When the situation of having a bowel movement after eating, it is recommended that the patient go to the hospital in time to improve the relevant examinations, to clarify the diagnosis, and the doctor will give the appropriate treatment and medication.