After eating, you want to poop to consider diarrhea, which may be caused by physiological factors such as cold, or pathological factors such as bacillary dysentery and ulcerative colitis. 1. Physiological factors: such as cold, consuming too much cold drinks, irritable bowel syndrome, etc., can be due to intestinal hypersensitivity, mental stress and other factors, resulting in intestinal mucosal stimulation, thus triggering diarrhea, abdominal pain, loss of appetite, nausea, vomiting and other symptoms. 2. Pathologic factors: (1) Bacterial dysentery: caused by Shigella dysenteriae invasion of the intestinal tract with mucus, pus and blood stools, acute and severe (lower abdominal discomfort, wanting to defecate, defecation after a sense of incomplete) feeling as the main features of intestinal inflammatory reaction disease, the onset of acute, abdominal pain, nausea, etc., the serious cases can lead to water and electrolyte disorders, coma and other conditions. (2) Ulcerative colitis: it is a chronic non-specific inflammatory disease of unknown etiology that mainly affects the rectum and colon, and the lesions are mainly confined to the mucous layer and submucosa of the rectum and colon, which can manifest as diarrhea, lower abdominal pain, mucus and blood stools. Want to poop after eating may also be caused by arsenic, lead, mercury and other heavy metal poisoning, it is recommended to consult a doctor to clarify the diagnosis, under the guidance of the doctor for targeted treatment.