Abstract: Objective To study the environmental risk factors of preterm infants,so as to offer basis for making effective preventive and control measures. Methods A 1∶1 match case-control method was used to choose 93 preterm birth cases and 93 control cases,an epidemiological investigation was carried out about life and work and psychological environmental risk factors of preterm birth,and at the same time,univariate and multivariate conditional Logistic regression model were used to screen risk factors. Results The results of univariate and multivariate conditional Logistic regression analysis showed that emotional tension,interior decoration,passive smoking,the air pollution around housing,interpersonal relation tension and cooking fumes might be the risk factors of preterm delivery. Conclusion Prenatal care should be taken targeting to risk factors of premature delivery to improve outcome of premature delivery.

Key words: environment, risk factors, premature

摘要： 目的 研究影响早产儿发生的环境危险因素，为采取针对的防治措施提供依据。方法 对93例早产儿行1∶1配对病例对照研究，进行生活工作及心理环境危险因素的调查，收集的资料进行单因素及多因素条件Logistic 回归分析。结果 单因素及多因素条件Logistic 回归分析显示:情绪紧张、室内装修史、被动吸烟、住房周围空气污染、人际关系紧张及烹调油烟可能是早产儿发生的危险因素。结论 针对早产儿发生的危险因素，应做好孕期保健，以降低早产儿的发生率。

关键词: 环境, 危险因素, 早产儿