Abstract:To investigate the clinical practice and application value of titanium clip in treatment of moderate and severe delayed hemorrhage of duodenal papillary sphincterotomy based on modified endoscopic negative pressure device.?Methods?10 cases of duodenal papillary sphincterotomy complicated with moderate and severe delayed hemorrhage were examined by gastroscopy under general anesthesia and tracheal intubation, and the location of bleeding was determined as duodenal papillary incision. Replace duodenoscope with titanium clip to stop bleeding.?Results?All the 10 patients were successful in hemostasis at one time. The average time of exploration under gastroscopy was (48.93 ± 3.24) min, the average time of titanium clip clamping was (14.55 ± 2.21) min, and the average number of titanium clips was (2.70 ± 1.22). 10 patients were treated with amylase before and after endoscope hemostasis 12 h and 24 h after hemostasis. The laboratory results of total bilirubin and direct bilirubin had no significant difference (P > 0.05), but there was significant difference in the laboratory results of hemoglobin before endoscopy and 12 h and 24 h after hemostasis (P < 0.01).?Conclusion?Under the premise of ensuring endoscopic visual field, endoscopic titanium clip is safe and effective in the treatment of duodenal sphincterotomy complicated with moderate and severe delayed hemorrhage, which is of great clinical significance.