This paper analyzes how the social participation of the elderly has changed due to COVID-19. In particular, compared to the general public, not only have their online activities limited due to the digital information gap, but also face-to-face activities due to COVID-19, so the negative impact of COVID-19 on their social participation and network activities is relatively large. will be. This paper empirically analyzes the changes in social participation and network activities online and before and after COVID-19 of the elderly compared to the general population by applying a double-difference analysis framework. According to the results of the regression analysis, the social participation of the elderly through online was relatively decreased compared to the general public before and after Corona 19, which means that their social participation restrictions were relatively large. The increase of the elderly and their mental health problems have been one of the challenges that our society has to solve. However, the empirical analysis results of this paper show that social participation of the elderly living alone is more restricted due to COVID-19, so a policy to strengthen social interest and care for them is needed.