Abstract:As philosophy is a foundation of all disciplines and studies,rhetoric is also a comprehensive discipline which is a basis for many disciplines.It has been proved by history that the rise and decline of western rhetoric has been closely related with western philosophy.Before the 20th century,philosophers regarded rhetoric as "enemy",so philosophy was opposite to rhetoric,which badly belittled the importance of rhetoric.At the beginning of the 20th century,western philosophy got "the linguistic turn",and language became the focus of philosophers.As the study how people use language was deepened,a broad movement "the rhetoric renaissance" has arisen and western philosophy got "the rhetoric turn".Hence,philosophy has been closely related with rhetoric,which not only greatly heightens the academic standing of western rhetoric,but also helps western philosophy change from theoretical philosophy into practical philosophy,which is full of life in real world.