Diarrhea on a full stomach may be due to improper diet, chronic enteritis, irritable bowel syndrome and so on. 1. Improper diet: unclean diet or eating too much cold, greasy, spicy and stimulating food, stimulate the mucosa of the gastrointestinal tract, increase gastrointestinal peristalsis, can have diarrhea on a full stomach. 2. Chronic enteritis: chronic inflammation of the intestinal tract itself caused by autoimmune, infection and other factors, after eating too much or inappropriate food to stimulate the gastrointestinal tract, intestinal peristalsis accelerated, there can be diarrhea on a full stomach, there can also be abdominal pain, bloating, indigestion and other symptoms. 3. Irritable bowel syndrome: often due to mental, psychological, stress and other reasons for functional intestinal disease, no organic lesions, most of the symptoms are mild, there may be manifested as diarrhea after eating, generally do adjustments can be improved. If you have diarrhea when you are full, you should go to the hospital and find out the cause and treatment under the guidance of the doctor.