The aim of this population-based cross-sectional study was to determine the prevaleMe, risk factors of UI on 20 year or older women and assess its influence on the quality of life. · The study group was comprised of 625 women designated with the stratified samPlitig technique according age and settlement district of 2000 year's population according to health registrations. The data were collected by using questionnaire are developed by researcher and the Urinary Incontinence Quality of Life Instrument (I-QOL) are developed by Patrick et al ( 199~). Questionnaire and QOL Instrument was carried out by home visits and face to face interview. The prevalence of urinary incontinence was 25.8%. Logistic regression analysis show~d that, UI was significantly associated with body mass index (OR I2.75, 95% Cl 6.68-24 ~). diabetes mellitus (OR 3.55, 95% Cl 1.44-8.73), neurologic disorders (OR 3.80, 95% Cl 1.69_ 8.58), recurrent urinary tract infections (OR 4.73, 95% Cl 2.52-8.88). Impairment of quality of life was related as statistically significant to type of VI (p<0.001), frequency of incontinence episodes (p<0.001), amount of leakage (pl), incontinence at during sexual intercourse (p<0.001).