There are many reasons for going to the toilet right after eating, the common ones are irritable bowel syndrome, chronic enteritis, indigestion and so on. 1. Irritable bowel syndrome: mainly manifested as abdominal pain, diarrhea, constipation, etc. After eating, food stimulates the mucosa of gastrointestinal tract and gastrointestinal peristalsis is enhanced, which can induce or aggravate the symptoms and the performance of defecation after eating. 2. Chronic enteritis: because of chronic inflammatory reaction in the intestinal tract, after exertion, cold, eating greasy food or emotional fluctuations, there will be a bowel movement, and there is a sense of urgency and heaviness. 3. Indigestion: a combination of factors make gastrointestinal dyskinesia, allergic visceral sensations, decreased gastric tolerance diastolic function of food, resulting in a feeling of fullness after eating, diarrhea, and a feeling of heaviness after eating. There may be other reasons for going to the bathroom right after eating, so it is recommended to consult a doctor in time to clarify the cause of the disease under the guidance of a professional physician to avoid delaying the condition.