Objective: To investigate the feasibility, safety and technical operations of robotic-assisted radical gastrectomy for gastric stump cancer using Da Vinci robotic system.   
Methods: The clinical data of 8 patients with gastric stump cancer undergoing robotic-assisted radical gastrectomy using Da Vinci robotic system from January 2017 to March 2018 were retrospectively analyzed.
Results: Robotic-assisted radical gastrectomy were successfully performed in all of the 8 patients using 
Da Vinci robotic system. The average operative time was (237.8±11.0) min, average intraoperative blood loss was (147.5±28.2) mL, and the average number of dissected lymph nodes was 32.3±7.6. The gastric tube was removed on postoperative day one in all patients. The average time to postoperative ambulation was (1.3±0.2) d, to first anal gas passage was (2.5±0.6) d, and to liquid intake was (2.7± 0.5) d, and the average length of postoperative hospital stay was (7.2±0.5) d. No death occurred during the perioperative period, and no complications such as intra-abdominal hemorrhage, abdominal infection, anastomotic leakage, anastomotic stricture, intestinal obstruction, and wound infection occurred after operation.
Conclusion: Using Da Vinci robotic system in radical gastrectomy for gastric stump cancer is safe, effective and feasible. The operation is more minimally invasive, less bleeding, less postoperative pain and less complications.