摘要目的:研究大学生人格五因素、负性生活事件与自杀倾向之间的关系，为大学生自杀预防工作提供参考依据。方法:采用横断面调查方法，在陕西省西安市分别选取综合类院校和理工类院校以及文科类院校各一所，共调查885名大学生，使用大五人格问卷(big five personality questionnaire)、生活事件问卷(life event questionnaire)、青少年自杀倾向问卷(scale of adolescents' suicide tendency)进行调查，采用层级回归的方法检验人格五因素和负性生活事件对自杀倾向的影响。使用SPSS 20.0软件进行Pearson相关分析和中介效应检验。结果:性别和负性生活事件对自杀倾向的交互作用不显著( β＝-0.03， t＝-0.96， P>0.05)，人格五因素中的责任心( β＝-0.12， t＝-4.06， P<0.01)、神经质( β＝0.24， t＝7.54， P<0.01)、宜人性( β＝-0.15， t＝-3.65， P<0.01)、外向性( β＝-0.27， t＝-8.56， P<0.01)、开放性( β＝-0.12， t＝-3.38， P<0.01)对负性生活事件与自杀倾向关系调节作用显著。高责任心、高宜人性、高外向性和高开放性对负性生活事件和自杀倾向的关系具有保护作用，高神经质是负性生活事件和自杀意念关系的危险调节因素。 结论:大学生人格五因素与负性生活事件、自杀倾向关系密切，人格五因素对生活事件和自杀倾向之间的关系具有调节作用。

abstractsObjective:To investigate the relationship among five personality factors, negative life events and suicidal tendency of college students, so as to provide reference for college students' suicide prevention.Methods:A cross-sectional survey was conducted among 885 college students in Xi'an city, Shaanxi province. A comprehensive college, a science and engineering college and a liberal arts college were selected respectively. Three questionnaires were applied to all subjects, including big five personality questionnaire, life event questionnaire and scale of adolescents' suicide tendency. Hierarchical regression model was adopted to analyzed the relationship of big five personality traits, negative life events and suicide tendency. Pearson correlation analysis and mediating effect test were conducted by using SPSS 20.0 software.Results:There was no significant interaction between gender and negative life events on suicidal tendency ( β=-0.03, t=-0.96, P>0.05). Conscientiousness( β=-0.12, t=-4.06, P<0.01), neuroticism ( β=0.24, t=7.54, P<0.01), agreeableness( β=-0.15, t=-3.65, P<0.01), extroversion ( β=-0.27, t=-8.56, P<0.01) and openness ( β=-0.12, t=-3.38, P<0.01)in Big Five personality had significant moderating effect on the relationship between negative life events and suicidal tendency. High conscientiousness, high agreeableness, high extroversion and high openness had protective effect on the relationship between negative life events and suicidal ideation. High neuroticism was a risk factor of the relationship between negative life events and suicidal tendency. Conclusion:The five factors of personality are closely related with negative life events and suicidal ideation. The five factors of personality can regulate the relationship between life events and suicidal tendency.