To understand the situation of women with induced abortion due to unwanted pregnancy in Hainan, so as to provide reference for further contraceptive services. Methods: A questionnaire survey was conducted by convenience sampling method among the women with unwanted pregnancies who asked for induced abortion in the family planning service agencies in some cities and counties of Hainan Province. Results: Among the respondents, 55% of them were aged 2534 years old, 90.8% of them were married women, 87.5% of them had a high school education or below, and 52.7% of them were farmers and unemployed people. Among the respondents, 58.8% of them did not taken any contraceptive measures before this induced abortion, and 24.6% of them took contraceptive measures but failed. 81.6% of these respondents incorrectly recognized that the contraceptive effects of intrauterine device (IUD) and compound oral contraceptives. 62.2% of them were accompanied by others during induced abortion. 41.7% of them had the first sexual behavior with their partner within 1-6 months of acquaintanceship. In these partners with sex, mostly of them were 15-24 years old, including 81.6% of women and 59.6% of men (χ2=83.2，P<0.01). 36.9% of the women with abortion and 14.1% of their partner were under the legal age of marriage. 69.1% of the respondents did not take any contraceptive measure during their first sexual behavior. 73.9% of the partners of the women after the first sexual behavior became their current husbands. Conclusion: The majority of women with childbearing age who have unwanted pregnancy before marriage, after marriage, or after induced abortion do not take contraceptive measures. Strengthening the knowledge popularization of contraception and improving the service of free contraceptives will prevent unwanted pregnancy among women of childbearing age.