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ABSTRACT: Introduction & Objective: Despite the cesarean section expenses, its mortality and morbidity rate is more than that of normal delivery.The world health organization has proposed the maximum of cesarean of cesarean section & real indicators to be 15%. This is a descriptive research which defines the prevalence of cesarean section & the related causes in Yasuj city in 1382. Material & Methods: This is a cross-sectional, descriptive analytical study. Subjects were 3596 mothers & they were equal to the population size. A questionnaire was completed by each subject & the collected data were analyzed by methods of descriptive statistics. Results: The result showed that the total number of reported delivery was 3596, out of which, 73.89% had normal, 26.06% had cesarean section & 0.05% had delivery with forceps & vacuum. About 68. 19% of those who used cesarean had their first or second delivery .42% of multi para women with cesarean closed their tubes. The most common reasons for cesarean were: repeated cesarean section (23.69%), elective (13.67), CPD (13.56%), fetal distress (13.45%), no cephalic presentation (11.63%) & mothers diseases (10.35%). Conclusion: The rate of cesarean in Yasuj is higher than world standard (32.92%). In order decrease the number of unnecessary cesarean, teaching the young pregnant mothers about the disadvantages of cesarean is necessary.