目的 ·评估上海外来未婚女工安全套的使用情况，探索常见社会心理问题与坚持安全套使用的关联。方法 ·采用整群随机抽样的方法对外来未婚女工进行问卷调查，了解 903名有未婚性行为者的安全套使用情况和相关社会心理因素，采用 Logistic回归对安全套使用相关因素进行分析。结果 ·受访的外来未婚女工中能坚持每次性行为都使用安全套的比例仅 13.8%。单因素分析显示，校正了人口学因素后，低自尊（ OR0.47，95% CI0.25～ 0.90）和抑郁（ OR0.59，95% CI0.38～ 0.93）与不能坚持使用安全套有关；多因素分析显示抑郁（ OR0.58，95% CI0.37～ 0.90）为主要相关因素。至少有 2个社会心理问题共患的外来未婚女工更难做到坚持使用安全套（ OR0.56，95% CI0.32～ 0.97）。结论 ·上海外来未婚女工中有抑郁问题者以及存在多个社会心理问题者更容易发生不安全性行为，提示对该人群安全性行为的认知行为干预应充分考虑社会心理方面。

Objective · To investigate condom among unmarried female miworkers in Shanghai and explore its relation with some psychosocial problems. Methods · A questionnaire survey was conductedcluster random sampling. A total of 903 unmarried female miworkers who had sexual experience were enrolled to evaluate their condom and psychosocial factors. Logistic regression was used to analyze the related factors of condom use. Results · Among the unmarried female miworkers, the percentage of consistent condom was only 13.8%. Univariate Logistic regression showed that low self-esteem (OR0.47, 95% CI0.25-0.90) and depression (OR0.59, 95% CI0.38-0.93) were related to inconsistent condom after correcting demographic factors. Multivariate Logistic regression showed that depression (OR0.58, 95% CI0.37-0.90) was the main factor related to inconsistent condom use. The participants with at least two psychosocial problems were more difficult to condoms consistently (OR0.56, 95% CI0.32-0.97). Conclusion · The unmarried female miworkers with depression or co-occurring psychological problems in Shanghai are more likely to have unsafe sex behavior, which indicates the importance of psychological interventions.