Objective To investigate the function of pelvic floor muscle exercise（PFME）and the combined therapy of biofeedback-electrical stimulation-pelvic floor muscle exercise on the quality of sexual life in postpartum women.Method 88 cases of lying-in women received in the second Affiliated Hospital of Chongqing Medical University from June 2013 to September 2014 were randomly divided into a combination therapy group（45cases）and a PFME group（43cases）.In follow-ups of 5days

42 days and 3months after their delivery

the physician assessed maternal vaginal wall bulge

detected their pelvic floor muscle voltage and pelvic floor muscle strength by using biofeedback-electrical stimulation rehabilitation instrument and asked these women to fill out the " Female Sexual Function Index Rating Scale"（FSFI）.Results After the treatment

the number of women with anterior and posterior vaginal wall bulge in postpartum 3months was obviously lower than before the treatment in both groups and the difference was statistically significant（P<0.05）;the pelvic floor muscle voltage of postpartum 42 days in the two groups was higher than postpartum 5days and the difference was statistically significant（P<0.05）;the pelvic floor muscle strength levels of postpartum 42 days in two groups（Ⅰ and Ⅱtypes of fiber）were higher than postpartum 5days and the difference was statistically significant（P<0.05）;in 3months postpartum

pelvic floor muscle voltage and pelvic floor muscle strength level in both groups were higher than postpartum 5days and the difference was statistically significant（P<0.05）;but 3-month postpartum pelvic floor muscle voltage and pelvic floor muscle strength levels of the combination group were higher than those of the PFME group and the difference was statistically significant（P<0.05）;the rates of sexual life in postpartum 42 days were respectively 40.00 % and 34.88%

the rates of sexual life in postpartum 3months were 84.44% and 79.07%

but there was no significant difference between the two groups;the difference of FSFI in postpartum 42 days was not statistically significant in both groups;in postpartum 3months

sexual desire

orgasm

sexual satisfaction and sexual pain of the combination group were significantly higher than the PFME group and the difference was statistically significant（P<0.05）.Conclusion The therapy of biofeedback-electrical stimulation-pelvic floor muscle exercises can improve the function of pelvic floor and the quality of sexual life in postpartum women and it can also provide a clinical evidence for the treatment of postpartum sexual dysfunction.