This study investigates the process and its effect for a doctoral student's advanced academic literacy (AAL) development in the context of student-supervisor relationship (SSR). The data sources comprise an authentic three-year tutorial record and 68 reflective learning journals written by a successful Chinese doctoral student of linguistics. The case shows that the participant developed a cognitive, cooperative, dialogic and instructive student-supervisor relationship and her learning activities in doctoral education are rich and constructive. The participant built her expertise mainly through knowledge acquisition and by a significant amount of academic writing practice for publication. Aided by her supervisor, the participant successfully joined as a research member the given sociocultural community. This socialisation promotes her professional identity transformation. The findings also reveal some weaknesses in the participant's AAL development, such as a lack of solid theoretical knowledge base, meaningful peer interaction, and in-depth integration into the international academic community.