摘要Objective: To identify effectiveness of ring pessary treatment for women with pelvic organ prolapse (POP),and analyze the risk factors of treatment failure.Methods: This study prospectively analyzed the visiting results of 66 women with POP 1 week, 1 month, and 3 months after implementation of pessary.Results: Successful rates of satisfactory pessary fitting over 1 month and 3 months were 72.7%(48/66) and 65.2% (43/66), respectively(P>0.05). No observed complications were found during the treatment. Pessary fitting results were not correlated with site or severity of POP. Risk factors affecting pessary fitting include: pelvic organ prolapse combined with urinary incontinence, shortened vagina and widened vulval slit. Major cause of treatment failure is due to difficulty of implementation of pessary.Conclusion: Ring pessary is an effective, cheap non-surgery treatment of POP, and a half of the patients receive this treatment with satisfactory result. One month could be used as a proper assessment period of satisfactory treatment.