There are many reasons for stomach pain from eating leeks, mainly divided into physiological and pathological factors. Physiological causes can generally be relieved by themselves, while pathological causes need to be identified and actively treated under the guidance of a doctor. Common causes I. Physiological factors Leek contains coarse dietary fiber, which is a stimulating food, not easy to digest, may stimulate the gastric mucosa to increase the burden on the gastrointestinal tract, causing stomach pain. Second, pathological factors 1, bacterial infection: patients eating leeks, if not cleaned, eating leeks with parasitic eggs or bacterial infection, can lead to gastrointestinal tract infection, causing abdominal pain; 2, gastrointestinal diseases: for patients with gastrointestinal impairment, such as gastric or duodenal ulcer, chronic gastroenteritis, gastric cancer, etc., eating leek-like irritating food can easily lead to gastrointestinal dysfunction, resulting in stomach distension and pain symptoms. Treatment Pathological causes of stomach pain should be treated at the hospital, further improve the stool routine, gastroscopy, colonoscopy, carbon 14 or carbon 13 breath test and other related auxiliary examinations to clarify the cause and then follow medical advice to choose the appropriate medication. Patients with gastritis and peptic ulcer can take ranitidine, famotidine, omeprazole and other drugs that inhibit gastric acid secretion, or sodium bicarbonate, magnesium aluminum carbonate and other drugs that protect the gastric mucosa, which can effectively relieve pain symptoms. In daily life, patients need to pay attention to a light diet, avoid spicy, stimulating, greasy and other indigestible food, drink less or no strong tea, tobacco, alcohol, coffee, etc., eat less and more meals, avoid overfull diet and overeating.