Evolution of Western Literary Theories in the 20th Century and the Reference Significance for the Construction of Chinese Literary Theories

In the 20th century,western literary theories flourished and the collision,blend and transformation of pluralistic literary theories became the developing trend of western literary theories.This paper sorts out the sequence of western literary theories in the 20th century and analyzes the effects of social development and changes,trend of thought in philosophy and aesthetics,linguistics and philosophy of language on the evolution of literary theories so as to reveal the law.We can see western literary theories as the reference frame,and use the meaningful component parts in evolution for reference to develop and enrich Chinese literary theories.