Background: The average of cesarean has increased over the last 30 years in developed as well as in developing countries. During the last decade, cesarean surgery rates increased by 1 to 2 times. As of 2015, there were 80434 mothers gave birth nationwide. In Ulaanbaatar city, 267106 births were recorded, from which 14,327 (30.7%) was born with cesarean section. In 2015, 32.2% of all births born in Ulaanbaatar delivered by cesarean surgery, which is 2.5% higher than the previous year. The rate of cesarean surgery has increased dramatically, however, causes and complications are unclear and these subjects are rarely investigated, thus, we decided to study this important issue. Material and methods: The study was carried out through a retrospective design of descriptive statistics. Using cross-sectional study, we randomly collected data from the history of total of 5125 births recorded in the Urguu Maternity Hospital, in 2015 and 408 were selected. Data was collected by using 48 questions in 5 sections. We used the Statistical Package for the Social Sciences (SPSS) 20 for data processing and estimation of survey findings. Results: From the total of 408 women, who given birth by cesarean delivery, 50.2% done under cesarean surgery for the first time, 33.3% for the second time and 16.5% of them experienced with cesarean surgery 3 or more times. The impact of cesarean section on abortions was studied by comparing the rates of cesarean section compared to rates of abortion and we had revealed that 25.3% of cesarean surgery had an abortion once and 11.2% of them twice and 7.4% had 3 or more abortions. Conclusion Number of chances getting pregnant is age-related (p=0.001). Cases of first cesarean delivery have increased to 50.2%. The frequency of cesarean section and the number of pregnancies was statistically significant (p=0.001). According to the retrospective study of maternity history, 43.9% had abortions. There is an inverse correlation between the rates of cesarean section and rates of abortion (p=0.004). Combination of disorders of the organ systems do not affect the rate of the cesarean section (p= 0.941). Vaginal inflammation does not affect the frequency of cesarean section (p=0.237).