Duodenal bulb ulcers should be avoided by taking irritating foods, but there can be individual differences in food tolerance among patients, and it is not possible to give an accurate answer to the question of “what is the most dreaded food”. Strong tea, coffee, alcohol, and spicy, too sweet, too hard, too hot or too cold stimulating food will stimulate the secretion of gastric acid, causing further damage to the ulcer surface, is not conducive to the recovery of duodenal ulcers, so patients should pay attention to eat less or even do not eat. However, it should be noted that the effect of different foods on patients may vary according to individual physical condition, severity of the disease and other factors, therefore, diagnosed duodenal bulbous ulcer, need to be under the guidance of the doctor combined with their own actual situation for dietary regulation, in order to strive for a good prognosis. Do not blindly self-regulation, in order to avoid improper intervention, resulting in adverse consequences.