Women of childbearing age who are at high-risk have a higher proportion of death caused by pre-existing medical conditions aggravated by the pregnancy. Poor behavior and not carrying out preconception care will make this condition worsened. Meanwhile, the data of preconception care implementation in Indonesia still cannot be found. The research design was descriptive quantitative using a survey approach, with a population of 68 high-risk women of childbearing age, using purposive sampling with a total sample of 43 respondents who fulfilled the inclusion criteria. The instrument used was the preconception care behavior questionnaire tested for validity and reliability. The behavior of high-risk women of childbearing age in obtaining preconception health preparation information was enough (72.1%), anemia prevention and control behavior was poor (90,7%), the accuracy in spacing pregnancy was enough (41.9%), and the accuracy of rational contraceptive use was good (60.5%). Increasing promotive and preventive attempts in improving preconception care behavior in high-risk women of childbearing age are needed to prepare for healthy pregnancies in the future.