One of the most successful reversible birth control methods is the intrauterine contraceptive device (IUCD), a long-acting reversible contraceptive technique. The goal of this work was to investigate the outcome of insertion of IUD during cesarean section and study the possible complications. This study was a prospective observational study; this study had been done in Dekernis general hospital and Alzahraa University hospital from December 2019 to November 2020 for 60 pregnant women from 130 pregnant women desired to undergo immediate post placental insertion of IUD during CS. Median age was 28.9± 5.36 years, mean gestational age was 38.07± 0.36 weeks, 26.7% cases were P-1, 23.3% were P-2. 30% had one CS before, 18,3% had two and 5% had three. There was high significant difference regarding pain and bleeding during the follow up. Only 1.67% had cervical displacement of IUD during the first week. Only 1.67% of cases were pregnant on top of IUD at 6th months follow up with no cases of ectopic pregnancy. Complication after 1st 24 hrs of insertion, pain of CS was in all cases but severe only in 1.7% of patients and bleeding normally in all cases but severe in 1.7% of patients. But, after 6th month, dysmenorrhea was in 1.67% of patients, vaginitis in 5.0%, menorrhagia in 1.67% and intrauterine pregnancy in 1.67% of patients. By inserting an IUD at the same time as CS, women may leave the hospital with a painless, long-acting method of birth control. IUD insertion during CS decrease the rate of unwanted pregnancies and prolong the inter-pregnancy intervals. To reduce insertion-related difficulties, postpartum intrauterine contraceptive device insertion should be performed by experienced and competent practitioners.