Composition-rhetoric as an emerging discipline, though barely known in China, is growing mature in America. With the first half of 20 th century as the starting point, this paper introduces the process of its formation, the development of rhetoric theories and the influence on composition instruction. The great facilitating effect of "rhetoric revival" and "process revolution" on the development of this discipline is elaborated on. Moreover, it is emphasized in this paper that the dramatic increase of doctoral programs in composition-rhetor...