Genre-based teaching approach is a pedagogy based on genre and genre analysis theory. Based on this teaching approach, the paper puts forward a three-stage model appropriate for the teaching of business English reading. It develops teaching activities focusing on the schematic structure of a discourse. Its purpose is to make students know that the discourses with different genres have different communicative purposes and discourse structures. Through a theoretical analysis and empirical study of the model, it is concluded that genre-based teaching approach can effectively help students improve their ability of business English reading comprehension.