Diarrhea after eating prunes may be related to food allergy, promotion of gastrointestinal motility and enteritis. 1. Food allergy: If a patient has diarrhea after eating prunes, the first thing to consider is whether it is allergic to prunes. If allergic, it can stimulate the mucous membrane of the gastrointestinal tract, which in turn leads to diarrhea. 2. Promote gastrointestinal peristalsis: patients eating prunes caused by diarrhea, may be due to the prunes themselves have to promote the role of gastrointestinal peristalsis, leading to gastrointestinal peristalsis too fast, diarrhea symptoms. 3. enteritis: patients with enteritis may also experience diarrhea after eating prunes. Because prunes can stimulate the gastrointestinal tract peristalsis, will aggravate enteritis, induced diarrhea and so on. There are many other causes of diarrhea after eating prunes, if the symptoms are serious or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, after a clear cause of the disease, targeted treatment under the guidance of the doctor.