Objective:To observe the curative effect of titanium-clip combined with mucosal injection for peptic ulcer bleeding and the impact on inflammation and stress.Methods:126 patients were randomly divided into the control group and the observation group according to the method of random number table, 63 cases in each group. The control group received endoscopic mucosal injection of adrenaline, and the study group received titanium-clip additionally. The blood loss, amount of blood transfusion and hospital stay, the levels of inflammatory cytokines [C-reactive protein (CRP), interleukin (IL)-6 and IL-8] and stress indexes (blood sugar, adrenaline, cortisol and C-peptide) were compared between the two groups.Results:Compared with the control group, the blood loss, amount of blood transfusion and hospital stay in the observation group were significantly less ( P<0.05), and the contents of CRP, IL-6, IL-8, blood glucose, adrenaline, cortisol and C-peptide were significantly reduced at 12 hours after operation ( P<0.05). Conclusions:The joint application of titanium-clip and mucosal injection shows fewer impacts on inflammation and stress, and is safe for peptic ulcer bleeding.