Having a bowel movement right after eating may be due to physiological or pathological reasons, such as acute enteritis, hyperthyroidism, etc. 1. Physiological reasons: may be eating too much food, once or twice a day defecation, and no other discomfort, the situation of defecation after eating may be a normal phenomenon. 2. Pathologic causes: (1) Acute enteritis: inflammation of the intestinal tract caused by unclean diet and cold abdomen. It causes damage to the gastrointestinal mucosa and accelerated gastrointestinal peristalsis. Caused by inflammatory stimulation, it may also be accompanied by intestinal flora imbalance, and may appear to poop after eating. (2) Hyperthyroidism: the main reason is that patients secrete too much thyroid hormone, causing a series of symptoms similar to sympathetic over-excitement in patients with high metabolism, leading to excessive gastrointestinal peristalsis, and nutrients are discharged out of the body before they are absorbed. (3) Gastrointestinal dysfunction: after eating cold, greasy, spicy and irritating food, it stimulates the gastrointestinal tract, causing the gastrointestinal tract to peristalsis too quickly, resulting in indigestion and increased stools. At this time, you need to pay attention to a light diet, can be combined with multi-enzyme tablets and other drugs to assist in the treatment. (4) Irritable bowel syndrome: After eating, food stimulates the gastrointestinal nerves, causing gastrointestinal dysfunction, weakening the ability of digestion and absorption, and increasing the number of bowel movements. It can be treated by taking oral nerve-regulating medications, such as ghrelin and vitamin B1, and at the same time, it is necessary to regulate the diet and keep a happy mood. Long-term occurrence of eating after defecation, it is recommended to timely consult a doctor, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the cause, and targeted treatment or treatment.