在以个人主义为文化核心的西方发达国家，关于个体转成人这一生命历程的研究早在二十世纪中期就已兴起。但在以家庭和关系为主导文化的中国，关于个体转成人的研究却非常少见。另一方面，在全球范围内流动人口年轻化的趋势下，已经有一些研究开始关注流动人口的转成人生命历程。但在拥有大量新生代乡-城流动人口的中国，却鲜有研究关注这一群体所处的转成人生命历程。为了弥补这些空白，本研究将探索中国新生代乡-城流动人口的转成人及其成人身份认同。 / 作为质性研究，研究者通过目的抽样的方法获得19位来自深圳市的、具有不同人口学特征的访谈对象。通过对被访者外出、工作以及婚恋经历进行深入访谈与分析，本研究获得了非常重要的发现。首先，新生代乡-城流动人口的转成人呈现非阶段、非线性、漫长、漂泊以及高风险的特征。第二，这一群体的转成人既非个体被各样社会环境单方面影响和形塑的过程，也非具有统一的年龄界限和发展任务的发展阶段，而是能动的个体与社会环境不断互动的过程，体现出丰富的社会、文化与个体多样性。第三，在成人身份认同方面，这一群体并非单纯地将年龄的增长与社会角色的转变看作其转成人的重要标志，而是更看重自身所具备的应对城市生存挑战和满足农村家庭伦理要求的能力，呈现生存取向与伦理取向相结合的特点。 / 本研究一方面挑战了成年初显期这一普遍运用于西方个体转成人研究中的新兴概念，另一方面，也挑战了传统的生命发展阶段视角对个体成长过程的线性的、阶段化以及标准化的理解。更重要的，本研究为中国本土关于新生代乡-城流动人口的研究提出了新的、整合的研究视角，即整合的生命历程视角。最后，研究者提倡关于新生代乡-城流动人口的社会政策与服务的设计应该具有整合的生命历程的视角，因为个体在转成人过程中的每一个选择都会影响其整个生命历程的福祉。更具体的，研究者从家庭、教育、就业、草根劳工NGO、籍制度、与社会福利制度等方面提出关于促进其转成人过程顺利进行、提高其社会福利的政策建议。 / Research on individuals’ transition to adulthood has emerged from the mid-20th century in Western developed countries with individualism as the core of culture. However, in China with family and relationship as the dominated culture, research regarding individuals’ transition to adulthood is rare. On the other side, research about the transition to adulthood among young migrants has sprung up under the context of global mobility in which young migrants become the major drive. However, there is little research focusing on the very transition-to-adulthood life course among young-generation rural-urban migrants in China while this age group has gradually dominated the whole rural-urban migrants. This study is to fill these research gaps. / This research explored the transition-to-adulthood experience and adult identity among Chinese young-generation rural-urban migrants. As a qualitative research, the researcher obtained 19 participants in Shenzhen by purposive sampling. Through two rounds of face-to-face in-depth interview about their life experience in migration, work and intimate relationship, this research found that the transition-to-adulthood trajectory of the participants is neither linear nor progressive; it is rather prolonged, recursive, floating, and fused with instability, contingency and risks. / Second, this research indicated that the transition to adulthood among the participants is neither a one-way process in which the individuals were passively influenced by social environment, nor a normative life stage with unified age ranks and developmental tasks. Rather, it is an interactive process between individual agency and different social environment and a trajectory with social, cultural and individual diversities. / Third, with regard to the formation of adult identity, the participants did not consider the age and role transition as the main markers of becoming adults. On the contrary, they took high regard of the ability and responsibility in coping with survival environment in cities and fulfilling the ethic requirements and expectations from their families. In other words, their adult identity formation is both survival-oriented and ethic-oriented which was molded by their status as rural-urban migrants. / This research challenged the concept of emerging adulthood which has been widely used in transition to adulthood research in western society. This research also challenged the traditional life stage perspective which understood individual’s life development as linear and normalized stages. More important, this research introduced a brand-new and more integrated research perspective ─ integrated life course - to research on young-generation rural-urban migrants in China. / This research advocated that social polices targeting on the young-generation rural-urban migrants in China should be designed in integrated life course perspective because each life choice during transition to adulthood will influence the participants’ wellbeing. More specifically, the researcher proposed some key advice on policies and services in the areas of family, education and labor market, for supporting the participants’ transition to adulthood and enhancing their social welfare. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / 趙瑞玲. / Parallel title from added title page. / Thesis (Ph.D.) Chinese University of Hong Kong, 2016. / Includes bibliographical references (leaves 326-361). / Abstracts also in Chinese. / Zhao Ruiling.