Abstract: Objective To analyze the status of induced abortion, and to explore the effect of post-abortion care services on contraception after abortion in juveniles. Methods Patients with an unwanted pregnancy who voluntarily underwent abortion surgery on an outpatient basis of adolescent female between August 2015 to July 2017 before abortion received post abortion care. Analysis was made regarding of adolescent patients with abortion about the general situation, number and risk factors of induced abortion, birth control methods before and after the abortion, the setting rate of contraception, effective contraceptive rate and the rate of continuous utilization of contraceptive method 1, 3 months after operation, etc. Results A total of 1 638 cases were collected, with an average age of (21.83 ±3.67) years old, 15 years old 3 cases (0.18%), 183 cases (11.17%) from 16 to 19 years old, and 1, 452 cases (88.65%) from 20 to 24 years old. Accidental pregnancy among adolescents was due to a failed contraception or non birth control. The implementation success rate of all those teenagers who were treated with PAC abortion was 100.00%, the rate of effective contraception ranged from 1.70% up to 67.33%, and effective birth control method mainly included the compound short-acting oral contraceptives and intrauterine device. The rate of effective contraceptive method decreased in the first and third months of follow-up, with an obvious decrease of oral contraceptive use. A total of 461 cases were lost during the follow-up period, and 10 cases (0.85%) of the 1 177 patients in the follow-up were pregnant again. Conclusion The reason of adolescent accidental pregnancy included no contraception and contraceptive failure. Scientific system of quality PAC (post abortion care) can effectively guide the youth to carry out the appropriate contraception, guarantee the efficiency of contraception, and prevent adolescents' repeated miscarriages, ensuring female adolescents reproductive health.