随着传统社会结构的瓦解，社会人际交往模式发生转变，熟人组成的道德共同体逐渐失去其本身作用。社会是关系的总和，主体与他者之间链接方式的改变自然而然会改变社会的结构与伦理理念。笔者选择从人际关系的视角出发，探讨熟人社会与陌生人社会之间社会结构与社会伦理的区别，从而挖掘在陌生人社会领域下出现的道德冷漠现象的底层原因。

同时，新型的社交文化“搭子”迅速成为青年群体的主流社交方式，这种新型社交方式的出现，打破了陌生人社会下“利益”“契约”这两大人际关系联系的纽带，主体与他者之间的人际交往又一次发生了变化，这是社会结构与社会伦理观念再次改变的契机。因此，新型社交文化会产生怎样的新的伦理关系是值得深入研究分析的话题，本文主要采用文献研究法、综合研究法与对比研究法进行研究，分析研究人际关系与伦理关系之间的链接，以及道德冷漠现象的链接。

With the breakdown of traditional close-knit communities, the unified moral community within society is gradually diminishing, and the bonds of interpersonal relationships are shifting from kinship to contract. Society is a sum of relationships, and the change in how individuals connect with others naturally alters the structure and ethical concepts of society. From the perspective of interpersonal relationships, this paper explores the differences in social structure and ethics between close-knit communities and societies of strangers, aiming to uncover the underlying reasons for the emergence of moral apathy in unfamiliar social settings.

Simultaneously, a new type of social culture known as "Dazi" has rapidly become the mainstream social interaction method among young-aged groups. This emergence of a new social interaction method disrupts the ties of "profit" and "contract" within a society of strangers, leading to another shift in interpersonal interactions between individuals and others. This presents an opportunity for further examination of the new ethical relationships that arise from this novel social culture. This paper is grounded in ethical studies, integrating insights from psychology, sociology, and other related fields. Employing a multidisciplinary approach supported by domestic and international literature, it analyzes the connections between interpersonal relationships, ethical responsibilities, and the phenomenon of moral apathy.