Literature investigating social capital theory and Chinese family culture suggests that social capital exists in virtual brand communities, bringing convenience to members, contributing to the cultivation of pan-family consciousness, and affecting consumer knowledge-sharing. In this study, we considered members of virtual brand communities as the research subjects, then analyzed the data using SPSS19.0 and AMOS21.0. We showed that network density, shared language, and shared vision of social capital have a positive impact on pan-family consciousness. This, in turn, had a positive influence on knowledge-sharing, thus playing an intermediary role between cognitive capital and consumer knowledge-sharing.