为探讨问题性社交媒介使用与主观幸福感的关系及其内在作用机制，以1073名大学生为被试，采用问卷法对其问题性社交媒介使用、技术冲突、疲惫感及主观幸福感进行调查。结果发现：(1)问题性社交媒介使用、技术冲突、疲惫感两两之间均呈显著正相关，三者与主观幸福感均呈显著负相关；(2)问题性社交媒介使用能够显著负向预测主观幸福感；(3)技术冲突和疲惫感分别在问题性社交媒介使用与主观幸福感的关系中起单独中介作用，并且问题性社交媒介使用还能通过技术冲突−疲惫感的链式中介作用影响大学生的主观幸福感。研究结果有助于揭示问题性社交媒介使用影响大学生主观幸福感的内在机制，对引导大学生合理使用社交媒介、对其进行心理社会适应服务具有一定的启示意义。

We recruited 1073 college students from four universities, using Social Network Sites Addiction Scale, Technology Conflict Scale, Fatigue Scale, the Positive Affect and Negative Affect Scale and Life Satisfaction Scale, to investigate the effect of social network sites addiction on subjective well-being and its underlying mechanism among college students. Results showed that: 1) There were significant positive correlations between any two of the three variables, that is, problematic social media use, technology conflict, fatigue, each of which was negatively correlated with subjective well-being. 2) Problematic social media use significantly negatively predicted subjective well-being. 3) Problematic social media use affected subjective well-being through three paths: the first was the mediating role of technology conflict; the second was the mediating role of fatigue; the third was the chain-mediated role of both technology conflict and fatigue. This study uncovered the mechanism underlying the relationship between problematic social media use and subjective well-being, which not only contributes to the understanding of the complex mechanism between problematic social media use and its outcomes, but also has enlightening significance for us to guide college students use social network sites appropriately and moderately and to promote their psychosocial adaptation.