Abstract:This paper is trying to strengthen the understanding of users' knowledge payment behavior, especially why the users’ switching intention that from free knowledge searching to knowledge payment behavior. With push–pull–mooring framework as the research framework, seven research variables including perceived information quality, trust, inertia (including affective based inertia, behavioral based inertia and cognitive based inertia), information fit-to-task, information overload, switching intention and knowledge payment behavior are introduced. The structural equation model is used to study the factors influencing users' switching intention and the relationship between these factors, as well as the relationship between switching intention and actual payment behavior. The results show that the pulling factor (perceived information quality, trust) and the pushing factor (information-task matching, information overload) have significant positive influence on their switching intention. Inertia has a significant negative effect on the switching intention. According to these research results, this paper could give some advices to knowledge suppliers and knowledge payment platforms about how to improve the knowledge service level and development strategy as following: highlight the content of knowledge output, ensure the output of new content is continuous, and enhance the quality of users’ perceived information quality; fully consider the inertia, strive to make distinctive knowledge services and differentiated precise services; provide high level information-task fit using experiences, and filter invalid information.