Effect of non-mechanical bowel preparation on postoperative gastrointestinal recovery following surgery on malignant gynecological tumors: A randomized controlled trial

•In China, mechanical bowel preparation is the routine bowel preparation for preoperative surgery for gynecological malignancies. But non-MBP in cancer gynaecology surgery,there is no such recommendation due to lack of evidence.•We found that the Preoperative nonmechanical bowel preparation in patients with gynecological malignant tumors did not affect intraoperative visual field exposure, nor increase the incidence of intraoperative involuntary defecation and surgical injury to adjacent organs.•The postoperative recovery of intestinal function in patients undergoing non-MBP before surgery was better than that in patients undergoing MBP. And the incidence of postoperative gastrointestinal adverse reactions was lower in patients undergoing non-MBP before surgery than in patients undergoing MBP.•Thirdly, Patients undergoing gynecological malignant tumor surgery without mechanical bowel preparation had better medical comfort than patients undergoing mechanical bowel preparation.•Thus, Nonmechanical bowel preparation is safer andbetter choice for gynecological malignant tumor patients without intestinal metastasis than MBP.