With the increasing complexity interaction, the relationship between information industry and building industry shows the characterizations of nonlinear and coupling. Their coupling and coordination degrees decide the development path and industrial strategy of the present construction industry. Based on the coupling of information industry and building industry, we establish their coupling degree and coordination degree model. Meantime, a numerical example for information industry and building industry is given by using the given model. Empirical results show that the proposed model is an effective way to improve forecasting accuracy.