We design a user interest model based on ordered pair behavior in order to improve the stabilization of the existing models. An innovation in this paper is the view that user interest model can be organized by user ordered pair behavior relevance. The main idea is to accumulate the value of user behavior, and then subtract the behavior value of some unrelated behavior according to the proportion of correlation. The experiment result shows that the stability of interest value in this model is better than the model not associated with behaviors.