Abdominal pain caused by eating bananas may be due to excessive intake, fructose intolerance or allergy, peptic ulcer and other phenomena causing symptoms. 1. Excessive intake: Eating too many bananas may cause the stomach and intestines to be unable to digest, leading to bloating, diarrhea, and may also cause abdominal pain. 2. Fructose intolerance: bananas contain a lot of fructose, if there are fructose intolerant people, after eating bananas can appear abdominal pain, nausea and vomiting and other phenomena. 3. Peptic ulcer: this kind of disease itself can appear abdominal pain, nausea and vomiting, abdominal distension, increased secretion of gastric acid and other phenomena, and eat too many bananas will aggravate the stomach’s digestive burden, which will lead to further aggravation of abdominal pain phenomenon. It is recommended to eat in moderation, and people with peptic ulcers can be treated by taking omeprazole acid-suppressing medication, which needs to be applied under the advice of a doctor.