Eating eggs on the stomach pain may be allergic reaction caused by allergy to proteins, may also be suffering from gastritis, gastric ulcer and other diseases, eating egg substances aggravate the burden on the stomach, stimulate the gastric mucosa caused by the pain. 1. Allergic reaction: eggs, duck eggs and other egg foods are rich in protein, if you are allergic to protein, inflammatory reaction occurs after allergy, stimulating the gastric mucosa, may appear stomach pain and other allergic symptoms. 2. Suffering from diseases: If stomach pain occurs when eating eggs, accompanied by bloating, nausea and other symptoms, it may be that the patient himself has gastritis, gastric ulcer and other gastric diseases, gastric mucosal damage, decreased digestive function. The egg white and egg yolk in egg substances contain a lot of protein, cholesterol, etc., which are not easy to digest and absorb, and stimulate damage to the mucous membrane after eating, aggravating the burden on the stomach and causing stomach pain. Eating eggs after stomach pain may also be other reasons, should promptly consult a doctor, under the guidance of the doctor to identify the causes and timely treatment.