To explore the contraceptive effect and adverse reactions of intrauterine device (IUD) inserted immediately after induced abortion in young nulliparas women, and to study which childless young women with more likely to accept IUD as contraception, so as to provide theoretical evidence for promoting IUD used in the childless young women. Methods: A total of 200 childless pregnant women (25 years old or less) who wanted to induced abortion were selected, and were divided experimental group (100 women with IUD inserted after induced abortion immediately) and control group (100 women with non-long-acting reversible contraceptive) based on the voluntary principle of these women. The situations of postoperative menstruation, IUD discharge, pregnancy again, sexual life frequency, and contraceptives used of the women in the two groups were analyzed. Results: There were no significant differences in the amount of postoperative bleeding, bleeding time, and menstrual volume, and the time of menstrual recovery of the women between the two groups. The incidences of low back pain and increased vaginal secretions of the women in the experimental group were significant less than 5%. The rate of unintended pregnancy again (0%) of the women in the experimental group was significant lower than that (6%) of the women in the control group (P=0.035). The sexual life frequency of the women in the experimental group was significant higher than that of the women in the control group (P=0.003). There were no significant differences in the distribution of educational level and marital status of the women between the two groups. The proportion of the women in work (46%) in the experimental group was significant higher than that (28%) of the women in the control group. The number of abortions of the women in the experimental group was significant higher than that of the women in the control group. Conclusion: It is safe, reliable and effective of IUD inserted after induced abortion immediately in young nulliparas. The young nulliparas with more times of abortion, in work, and high frequency of sexual life are more willing to accept IUD as contraception.