Study aim: Determining the effect of pelvic floor muscle exercise on urinary incontinence and leisure activities of women with Multiple Sclerosis Design: Experimental research without control group will be performed on 12 female patients that they will be selected by convenience sampling. Settings and conduct: The research place will be located in the occupational therapy clinic of Sina Hospital in Hamadan. Patients will go there and pelvic floor exercises will be done under the supervision of occupational therapists. Blinding will not do in research. Participants/Inclusion and exclusion criteria: Capable to write and read Don't have any other diseases Intervention groups: Intervention group: Patients do exercise 3 times a week for 8 weeks. These exercises are performed under the supervision of occupational therapists. This series of exercises includes three sport movements: Bird dog, Plank and Leg lift, which are used to strengthen the pelvic floor muscles. Main outcome variables: Urinary incontinence Leisure activity