SMC model is a group of models to forecast customer' s buying behaviors and was provided in 1987. There are few empirical researches and applications of SMC model for shortage of customer data and its complexity. To choose IT distribution market industry as background, a empirical research is done in this paper. Digital China is the biggest company in China' s IT distribution market. Digital China' s customer data sample is used in this paper. The conclusion is that SMC model does work in IT distribution market industry. Also, the revise advice for SMC is put forward to meet different type of customer behavior.