It may be a normal phenomenon to poop after gastrointestinal examination, and secondly, it may be caused by other reasons such as bad dietary habits, food poisoning, and irritable bowel syndrome. 1. Normal phenomenon: gastrointestinal examination may cause stimulation of the mucous membrane of the gastrointestinal wall, which may lead to the patient’s desire to poop after the gastrointestinal examination. This is a normal physiological phenomenon and can be left untreated. 2. Bad diet: Eating cold food such as ice cream or chilled watermelon after gastrointestinal examination may stimulate the gastrointestinal tract, which may lead to pooping. 3. Food poisoning: Food poisoning may be caused by Salmonella spp, Vibrio parahaemolyticus, Escherichia coli and other pathogen infections. Patients will have abdominal pain, diarrhea, nausea and vomiting and other manifestations. If the patient eats unhygienic food after doing gastrointestinal tract, it may induce food poisoning thus causing symptoms of pooping. 4. Others: pooping after gastroenteroscopy is also considered to be caused by irritable bowel syndrome, dyspepsia and other diseases. If the pooping after gastroenteroscopy is normal or caused by bad dietary habits, it can be left untreated. If it is caused by a disease, the patient needs to consult a doctor in time and follow the doctor’s instructions.