Stage A1 duodenal bulb ulcer usually represents the duodenal bulb ulcer is in the active stage, generally speaking, the ulcer is relatively light, limited to the mucous membrane and the mucous layer, because in the gastroscope for the duodenal bulb ulcer staging is usually divided into the A stage, that is, the active stage, there is also the H stage healing stage, the S stage of scarring stage. A stage of ulceration is limited to the mucous membrane and submucosa, for the duodenal bulb ulcers stage A1, usually need to avoid eating spicy and stimulating food, avoid drinking tea, avoid drinking alcohol and regular anti-ulcer treatment should be used in three or four courses of medication. Usually need to avoid eating spicy, stimulating food, avoid drinking strong tea, avoid drinking alcohol, at the same time to formal anti-ulcer treatment, usually using three or four drug treatment, the course of treatment needs two courses, each course of treatment usually need about two weeks. After the two courses of anti-ulcer treatment, then review the gastroscope to observe the recovery of duodenal bulb ulcers.