Stage H1 of duodenal bulb ulcer means healing stage 1. Referring to the Diagnostic Criteria and Therapeutic Program for Peptic Ulcer, the ulcer is divided into three stages by gastroscopy: active stage (A stage: A1, A2); healing stage (H stage: H1, H2); and scarring stage (S stage: S1, S2).H is the initial letter of the word Heal, which translates as healing, and is divided into stage 1 and 2 according to the healing situation. The difference between stages H1 and H2 is that in stage H1 the ulcer shrinks and becomes shallower, the white moss is smooth at the edges, the peripheral edema disappears, and the regenerating epithelium around the ulcer is obvious and red fenestrated, with folds concentrating up to the edges of the ulcer.Stage H2: the ulcer shrinks significantly, but remains, the white moss becomes thinner, and the regenerating epithelium is widened in extent. H1 stage indicates that the patient’s ulcer is in the healing stage, the symptoms are not heavy, to complete healing will take 3 to 6 weeks, it is recommended that the patient according to the doctor’s advice to actively treat, regular work and rest.