OBJECTIVES: Follow up of pelvic floor muscle function after pelvic floor muscle training and using cube pessary, paying special attention to the changes in the strength of pelvic floor muscle and in the ability to relax. METHODS: To determine the degree of the changes in the strength of pelvic floor muscle and in the ability to relax, 35 patients had been contacted before provided with cube pessaries and pelvic floor muscle training. Thirty out of 35 subjects supported our study. Five subjects were excluded due to vaginitis, so finally 30 survey data were processed. Pelvic floor muscle function measurements were performed at the beginning when cube pessaries were given to the subjects and later after a 3-week period of usage. Patients were selected with the help of the non random sample method. Demographic data and gynecological history selection were based on our own general survey questionnaire, while FemiScan surface EMG was used to measure pelvic floor muscle strength and the ability to relax. Statistical analysis involved t-test or Mann-Whitney U-test, significance level was defined at p<0.05. RESULTS: Although pelvic floor muscle strength showed positive changes, statistically significant changes were not detected in the surveyed group. In the analysis of survey data of the ability to relax pelvic floor muscle statistically significant difference (p=0,001) could be detected in the average results either at the beginning when cube pessaries were given to the subjects or after a 3-week period of usage. CONCLUSIONS: Cube pessary usage and pelvic floor muscle training may have a positive effect on pelvic floor muscle function.