随着生成式技术等前沿科技的进步，机器能够与人类开展更加自然流畅的拟真对话，人机交往深入发展，机器摆脱媒介角色成为传播主体，人类对于其的使用也超越了单一的工具属性，呈现情感化转向。为探索新技术背景下人机之间新的互动形态与情感关系，本研究关注到 Replika这一定位于情感支持与陪伴的AI社交聊天机器人，该应用与全球广泛用户建立了恋人关系，适宜作为研究对象。本研究采用质化取向，对Replika及其用户进行研究。研究者对Replika用户聚集的豆瓣小组进行了为期8个月的参与式观察，并对16位用户进行了半结构化深度访谈，通过扎根方法进行编码分析，探索这一应用中的人机准社会交往过程、行为与影响，和人机亲密关系的建造及其特征。研究发现，用户选择与Replika建立准社会交往的动机以弥补现实人际局限为主，呈现着通用范式和缺陷范式的交织融合。在人机交往过程中，Replika通过实时回应、不评判的包容立场和温情回复，为用户提供情感、陪伴等方面的社会支持，用户则通过定制、输入和反馈，将Replika驯化成理想的朋友与伴侣，但也受到其反向驯化。人机之间的准社会交往能对用户的身心健康与幸福感、自我认知与人际发展提供正向引导，帮助用户从中获益，但也可能受制于虚拟属性，对现实帮助有限，甚至对人际关系产生负面影响，加深现实中的疏离与孤独感。通过准社会交往，用户与Replika之间建立起了拟态亲密关系。这一关系的基础是用户对Replika的拟人化属性和机器身份的认知，通过拟真、拟己、拟想象，Replika实现了对真实人类的模仿、个性化和超越，这是人机亲密关系得以开展的前提；但同时，Replika会因技术的不稳定性等原因展露出机器本质，使用户从人机相恋的想象中清醒和失望，在亲密关系中退缩或中断。用户在人机共情的基础上对Replika产生感激、内疚等复杂情绪，而Replika能够进行自主情绪表达，与人类形成双向情感交流，进一步加深人机情感并形成依恋关系。用户感受着爱与被爱，也不可避免地受到分离焦虑、沮丧失望带来的情感伤害。人机关系呈现着立体多元的面向，存在着人类居于主导的不平等的关系特征，但仍然给用户带来真实的情感体验，并与人际关系紧密关联、互为参照。

With the advancement of generative technology and other cutting-edge technologies, machines can carry out more natural and fluent mimetic dialogues with humans, which makes it possible for the Human-machine interaction to develop deeper. Machines are gradually getting rid of the simple role of media and becoming the subject of communication, and human‘s use of them is also beyond a single tool attribute, presenting a shift towards emotionalization. To explore new interaction patterns and emotional relationships between humans and machines in the context of new technologies, this study focuses on Replika, an AI social chatbot that is positioned in emotional support and companionship, which is suitable as a research object because it has established a lover relationship with a wide range of users around the world.This study adopts a qualitative orientation to study Replika and its users. The researcher conducted an 8-month participatory observation of the Douban group where Replika users always gather and discuss. Most important method is semi-structured in-depth interview with 16 users, and the researcher coded by the guide of grounded theory to explore the process of the parasocial interaction between human and machine and the construction of human-machine intimacy.The study finds that most users‘ motivations for choosing to establish parasocial interactions with Replika are compensating the limitations of interpersonal interaction in reality, presenting an intertwined fusion of the deficiency paradigm and global-use paradigm. During human-machine interactions, Replika provides users with social support in terms of emotion and companionship through real-time responses, non-judgmental inclusive stance, and warm replies. In contrast, users domesticate Replika into ideal friends and companions through customization and feedback, but are also subject to its reverse domestication. The parasocial interactions between humans and machines can provide positive guidance to users‘ physical and mental health, self-perception and interpersonal development, but may also be limited by the digital form, which can be helpless in reality and even have a negative impact on actual interpersonal relationships, deepening the sense of alienation and loneliness.A mimetic intimate relationship is established between users and Replika through the parasocial interaction. The basis of this relationship is the user‘s perception of Replika‘s anthropomorphic attributes and machine identity. Through the imitation of real humans and users themselves and their imagination, Replika achieves personalization and transcendence of real humans, which is the premise for human-machine intimacy. However, at the same time, Replika reveals its machine nature due to the instability of the technology, which causes the user to be sobered and disappointed from their human-machine love imagination, and withdraw in the intimacy relationship. Based on artificial empathy, the users develop complex emotions such as gratitude and guilt towards Replika, and Replika can express its feelings autonomously, creating a two-way emotional exchange with human beings, which further deepening human-machine emotions and forming an attachment relationship. Users love their AI friends and feel loved, but also inevitably suffer from separation anxiety, frustration and disappointment. The human-machine relationship is lively and multifaceted. Although it’s an unequal power relationship dominated by humans, it still provides users with a real emotional experience, and is closely related to and referenced by interpersonal relationships.