This study examined the factors influencing participation of online community and intention of joint purchase in Korea and China. The online community member actively participate the social activities that can cause the effective communication characters and the great support of the society. In these two factors, the sense of worth related with compensation, norm, interaction, shared values will be taken as the independent variables. These variables as a parameter are related with the intention of joint purchase. To be aware of their behavior norm, interaction, compensation, shared value, these factors will be taken as predicting their behaviors in the online community and their further participating, commitment and co-shopping intention. As the results, compensation, norms, interaction, shared values had significant effects on the participation of online community, and this affected the intention of joint purchase in online community. Compensation and norm were significant in Korean sample. Implications and further direction are suggested on the base of the results.