Objective To comparatively analyze the MRI findings of patients with pelvic organ prolapse (POP) operation. Methods 47 patients with POP confirmed from September 2012 to September 2014 in the department were treated as the POP group. 30 cases of normal women who received physical examination in the hospital during the same period were selected as the control group. Both of the two groups underwent static and dynamic magnetic resonance imaging (MRI). The related parameter values and MRI findings of POP patients before and after operation were compared between the 2 groups. Results There were no significant differences in resting position levator ani muscle parameters before and after POP operation (P＞0.05) and compared with the control group, the differences were significant (P＜0.05). There were no significant differences in dynamic PRT-L, PRT-R, ICT-L and ICT-R between groups before and after POP operation (P＞0.05) but those in the 2 groups were lower than those in the control group (P＜0.05). Before POP operation, dynamic LHS, ICA-L, ICA-R, LPA, M line and H line were significantly higher than those after operation and those in the control group (P ＜0.05). Compared those after operation with those in the control group, the differences were significant (P＜0.05). MRI scanning was performed before and after operation. There were no differences in the morphology of levator ani muscle but for postoperative sagittal view, MRI showed that the position of bladder neck moved up and the bladder angle was reduced. The lowest point of pelvic organ was above the pubic bone line. Conclusion MRI is an imaging method for the diagnosis before POP and postoperative curative effect evaluation.