With the intertwining of digitalization and aging，and the deepening of digital feedback alongside the foundational construction of age-friendly environments，the elderly population has transitioned from digital refugees to digitally vulnerable groups，and now to short video users and online streamers. Based on the successful aging metamodel of SOC theory，this study employs in-depth interviews and participatory observation to explore the short video social lives of rural elderly individuals. The findings reveal that while rural elderly groups remain disadvantaged，they are not devoid of capabilities. In the digital environment，they have found ways to adapt to structural challenges such as resources reduction and the relationship loss through selection，optimization，and compensation. Additionally， through digital socialization，the study uncovers different representations of technological adaptation，behavioral adaptation，and cultural adaptation among rural elderly individuals. The study breaks through the conventional analytical perspective of SOC theory by incorporating digital spaces to explore the media use and subjectivity construction of the elderly population. It provides an empirical pathway for building an age-friendly society through technological collaboration，grounded in the experiences of elderly individuals.