Objective To investigate the impact of post-abortion care(PAC)on the mental health and contraceptive behavior of women who have undergone induced abortion for unintended pregnancies.Methods A total of 426 women who underwent voluntary abortions due to unwanted pregnancies were randomly assigned to either the control group or the observation group,with 213 cases in each group.The control group received routine medical consultation without PAC,while the observation group received comprehensive PAC services.The postoperative anxiety levels,compliance with high-efficiency contraception,self-management abilities,complications within three months after the procedure,and one-year re-pregnancy rate were analyzed for both groups.Results After the intervention,the anxiety self-assessment scale scores and self-management ability scores of the observation group were significantly lower than those of the control group(both P<0.05).One year after the operation,the adherence rate to efficient contraceptive behavior in the observation group(92.96%)was higher than that in the control group(86.85%),and the incidence of complications within three months after the operation(3.76%)and the rate of re-pregnancy within one year(2.35%)were lower than those in the control group(8.92%,7.51%),with all differences being statistically significant(x2=4.372,4.785,6.061,all P<0.05).Conclusions Post-abortion care measures can promote postoperative mental health in women,enhance their postoperative self-management abilities,and reduce the rates of postoperative complications and repeat abortions.