Objective To analyze the effect of practice teaching based on the elderly interview in baccalaureate Gerontological Nursing. Methods According to the interview guide in the course, 44 baccalaureate nursing students selecting Gerontological Nursing as elective course were asked to interview an elderly person in their spare time and submit an interview report, which was used to analyze their reflection using the qualitative content analysis method. Results Four themes and 11 subthemes were extracted:integrated study of theoretical knowledge, practice, and research (deep learning outside the classroom， motivating active thinking and learning, providing service during learning, and the value of gerontology nursing), understanding the elderly and their lives (changing the stereotype images of the elderly, and facing the illness), reflection on elderly care (strategies of elderly care at multiple levels, policies and strategies improving healthcare service in multiple dimensions, and supports at societal level), and personal insights in companionship (social responsibility and wisdom of life). Conclusion Application of the elderly interview in the practice teaching of baccalaureate Gerontological Nursing, could deepen the nursing students′ understanding of the elderly, promote their personal growth, and consolidate the effects of classroom-learning.