Introduction and Hypothesis: We aimed to clarify the frequency of cul-de-sac obliteration in patients undergoing POP surgery.Methods: We retrospectively reviewed patients who underwent laparoscopic POP surgery at our hospital between April 2017 and September 2021.Results: In total, 191 cases were included in the analysis. Ten patients (5.2%) had cul-de-sac obliteration.No difference in age (73 years vs. 72 years, P = 0.99), parity (2 vs. 2, P = 0.64), or body mass index (BMI) (25.7kg/m 2 vs. 24.7kg/m 2 , P = 0.34) was observed between the cul-de-sac obliteration and normal groups. No signi cant differences were observed in the rate of previous abdominal surgery (50.0% vs.32.6%, P = 0.46), rate of POP -quanti cation system (POP-Q) ≥2 posterior prolapse (40.0% vs. 46.4%, P = 0.98), and effect of defecation symptoms on the prolapse quality of life (p-QOL) score (vaginal bulge emptying bowels: 2.