||Prior research on social network sites is focus on using motivation or intention of use. Seldom of them use habit to discuss excessive internet use and their impact of well-being. By focus on Facebook, this study investigates the relationship between habit and addiction, and following we will examine the relationship between addiction and|
well-being. Base on prior research we found out three major habit’s antecedents, which come from perceived value, utilitarian value, hedonic value and Social value. In addition, the number of users and the time of use in Facebook are both the highest website in Taiwan. We decided to examine how this phenomenon will affect user’s mind, so we expanded our model to addiction, subjective well-being and psychological well-being. Data collected from 318 users of the Facebook provide strong support for the research model. The results suggested that habit was driven by perceived value, and habit are important to addiction formation. The data also indicate that a higher level of habit increase the effect of habit on addiction. Also, the relationship between addiction and well-being are both confirmed. Practical implications for theory and practice and suggestions for future research are also discussed.