Easy diarrhea after eating breakfast may be caused by dietary factors, abdominal cold, chronic colitis and so on. 1. Dietary factors: may be related to the food eaten at breakfast, such as breakfast too much to eat fatty foods, or eat protein-rich foods, and itself lactose intolerant, this situation may occur. 2. Abdominal cold: It may be that the cold abdomen at night leads to abnormal intestinal peristalsis, for example, the gastrointestinal tract peristalsis is too fast, and the food is quickly expelled from the body after eating breakfast, leading to diarrhea. 3. Chronic colitis: due to inflammation stimulation will lead to intestinal function is affected, intestinal peristalsis accelerated, and due to pathogenic microorganisms decomposition of food, but also easy to lead to dilution. After eating breakfast easy to dilute, there may be other causes, if this situation occurs repeatedly, should be timely consultation, identify the causes of targeted treatment.