Objective To discuss the influence factors of pregnancy intention and the influence of pregnancy intention on the effect of perinatal maternal and infant health outcomes. Methods A total of 826 cases of pregnant women, who hospitalized in our hospital from January 2012 to June 2014, were selected as the study objects and divided into the intended pregnancy group (n=547) and the unintended pregnancy group (n=279). In the case of non family mem-bers and medical staff to interfere, patients completed a questionnaire survey, to investigate the influencing factors of preg-nancy intention, such as age, occupation, place of residence, the number of sexual partners, unmarried cohabitation, com-pulsive sexual behavior, age of first sexual behavior. The effect of intended and unintended pregnancy on maternal and in-fant health (regular antenatal care, insist on breastfeeding, premature delivery rate, low birth weight children rate, suffered from serious illnesses and mortality) correlation were analyzed. Results The single factor analysis of age, occupation,residence, age of first sexual intercourse, number of sexual partners, unmarried cohabitation and compulsive behavior showed that place of residence had no effect on unintended pregnancy (P>0.05), while age, occupation, the age of first sex less than 18 years, more than 2 sexual partners unmarried cohabitation and compulsive sexual behavior were the important factors affecting the unintended pregnancy (P<0.05). With the occurrence of unintended pregnancy or not as the dependent variable and factors selected as independent variables, logistic regression analysis showed that whether students or not, mul-tiple sexual partners and compulsive sexual behavior, place of residence had no effect on unintended pregnancy (P>0.05). Age, sex for the first time more than 18 years of age and whether unmarried cohabitation had important influence on unin-tended pregnancy (P<0.05). Compared with the intention of unintended pregnancy, the regularity of pregnant women had better performances in prenatal care (87.5%vs 64.2%), breast feeding (92.4%vs 47.6%), premature birth (11.4%vs 17.6%) and low birth weight (14.3%vs 21.7%), and the differences were statistically significant (P<0.05). Conclusion Intended pregnancy has a significant role in improving maternal and neonatal outcomes of pregnancy. It should prompt the bene-fits of the intended pregnancy to the general public, and popularize the dangers of unwanted pregnancy.%目的：探讨妊娠意愿的影响因素和妊娠意愿对围产期孕产妇及婴儿健康情况的影响。方法将2012年1月至2014年6月于我院及协作单位接受住院治疗的826例孕妇纳入研究，其中意愿妊娠组547例，非意愿妊娠组279例。在不受家属及医护人员干扰的情况下患者完成问卷调查，分析年龄、职业、居住地、是否多性伴侣、是否未婚同居、是否强迫性行为和首次性行为年龄等影响妊娠意愿的因素，分析意愿与非意愿妊娠对母婴健康(定期产前保健、坚持母乳喂养、早产率、低体重患儿率、罹患严重疾病和死亡率）的影响。结果在对年龄、职业、居住地、初次性行为年龄、性伴侣人数、未婚同居和强迫性行为进行单因素分析后发现：居住地对非意愿妊娠无影响（P>0.05)，而年龄、职业、初次性行为年龄小于18岁、性伴侣人数超过2人、未婚同居和强迫性行为是影响非意愿妊娠的重要因素(P<0.05)；以发生非意愿妊娠与否为因变量，以筛选出的影响因素为自变量，进行Logistic回归分析后发现：是否为学生、多性伴侣和强迫性行为及居住地对非意愿妊娠无影响(P>0.05)；而年龄、首次性行为超过18岁和是否为未婚同居显示出对非意愿妊娠具有重要影响(P<0.05)；两者在规律进行产前保健(87.5%vs 64.2%)、母乳喂养(92.4%vs 47.6%)方面进行比较，意愿妊娠者比例明显高于非意愿妊娠者，两者在出现早产(11.4%vs 17.6%)、低体重患儿(14.3%vs 21.7%)方面进行比较，意愿妊娠者明显低于非意愿妊娠者，差异均具有统计学意义(P<0.05)。结论意愿妊娠对提高母婴结局有明显促进作用，应向普通群众推广意愿妊娠的益处，普及非意愿妊娠的危害。
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