PurposeThe success of social commerce group-buying information system (IS) is not a simple accumulation of functions, but a complex process of system integration that makes it difficult to design a high-quality website to improve the conversion rate of users has become a top priority for online companies. The purpose of this study is to further improve the IS success model to adapt to the new research scenarios and explore the boundary conditions between different satisfaction and repurchase intention.Design/methodology/approachIn this study, the users who have used the group-buying website quality for social commerce in the last 6 months are the objects of this study. Finally, 436 valid data were collected by questionnaire survey and analyzed by Smart PLS.FindingsThe results indicate that the four dimensions of website quality enhance consumers' economic satisfaction and social satisfaction, except that the path of system quality and social satisfaction is not significant. Economic satisfaction and social satisfaction also have a significant positive effect on repurchase intentions. Besides, the interactive effect of customer involvement and economic satisfaction has no significant impact on repurchase intention, but customer involvement plays a moderate role in the path of social satisfaction on repurchase intention.Originality/valuen order to make the IS success model better evaluate the characteristics of social commerce sites comprehensively, this present research introduces the measurement construct of interaction quality. Moreover, this study examines the effect of mechanism of economic satisfaction and social satisfaction on repurchase intention from the perspective of practical benefit and psychology. Finally, the boundary conditions of the effect of satisfaction on repurchase intention are explored.