为了探讨政治性抑郁的研究对分析当下大学生心理健康的重要性，本文以大学疫情管控下学生们的生活变化、抑郁状态和人际关系为研究主题，梳理个体应对重大突发性公共卫生事件时的行为和心理机制。本文将具体呈现为三个部分：一，讨论公共信任“危机”在学生群体中的形成机制，深入理解大学生活融合各地校园疫情防控政策导致的群体性抑郁现象，明晰促使抑郁大规模蔓延的根源。二，使用深度访谈的方法分析大学生从封闭期间、封闭隔离或感染到校园封闭完全解除之后的行为及价值观念的变化，借用公共卫生事件的生命周期理论理清抑郁的阶段性表现，以探清学生出现抑郁变化的必然性。三，从疾病感染的隐喻中分析情境因素对情绪结构的影响，思考疾病的道德渲染干预个体命运的过程，在突发性公共卫生事件中的道德审判重新看待学生的社会关系。本文期望在公共卫生事件突发情况下的大学生抑郁体验，探究疾病的隐喻性思维对社会关系秩序的消解过程，更清晰地勾勒出大学生们的时代画像。

In order to explore the importance of the study of political depression in analyzing the mental health of university students today, this paper takes the changes in students' lives, depression and interpersonal relationships under the control of university epidemics as the theme of the study, and sorts out the behavioral and psychological mechanisms of individuals in response to major public health emergencies.The paper will be divided into three parts: First, we will discuss the formation mechanism of public trust "crisis" in the student body, and gain an in-depth understanding of the group depression phenomenon caused by the integration of university life into campus epidemic prevention and control policies around the world, and identify the root causes that contribute to the large-scale spread of depression. Second, we use in-depth interviews to analyze the behavioral and value changes of college students from the period of confinement, isolation or infection to the time when the campus confinement is completely lifted, and use the life cycle theory of public health events to clarify the stages of depression, so as to explore the inevitability of depression changes among students. Third, we analyze the influence of situational factors on emotional structure from the metaphor of disease infection, consider the process by which the moral rendering of disease interferes with the fate of individuals, and take a fresh look at students' social relationships in the context of moral judgment in sudden public health events. This paper expects to explore the process of disintegration of the metaphorical thinking of disease on the order of social relations in the depressive experience of college students in the sudden situation of public health events, and to draw a clearer portrait of college students in their times.