Purpose This qualitative study aimed to explore multidisciplinary members’ perceptions and expectations of advanced geriatric nursing role development in primary health care. Patients and Methods A multi-center, cross-sectional study based on semi-structured individual interviews was conducted with registered nurses, general physicians, and managers involved in the care of older people in primary health care between September 2020 and January 2021. Recruitment was purposive and the framework method was used to inductively analyze the data. The Consolidated Criteria for Reporting Qualitative research (COREQ) served to structure our manuscript. Results In total, 29 registered nurses, 6 general physicians, and 10 managers from 8 health centers were interviewed. The relevant themes interpreted from the interview data were as follows: (1) the current roles of registered nurses in the care of older people; (2) the factors affect the advanced geriatric nursing role development; (3) expectations of the advanced geriatric nursing roles. Conclusion There is a need for appropriate educational programs, well-established laws, and regulations to support the sustainable development of advanced geriatric nursing roles. To build the expected role model, the nursing education program in the future should integrate gerontological nursing, public health nursing, and nursing management to maximize the role of gerontological nurse practitioners in primary health care.