Student deep participation in library work allows students to actively participate in library operation and become deeply involved in library service and program development. There are usually two levels of deep participation: level I refers to the employment of student assistants in different areas of library routine work, ranging from shelving to IT support; and level II refers to the engagement of students as library partners or collaborators, working with librarians to complete independent project. Sharing Tsinghua University Library's experiences, we provide a holistic view of how the two levels of student deep participation are implemented at an academic library, with a focus on level II. We seek to generate a thorough understanding of the practices and benefits of student deep participation, and encourage academic libraries to create more opportunities to deeply involve students in library work, and to ultimately demonstrate the value and relevance of the library to the campus community.