Abstract: There is a strong tide of "understanding" in production and reading of Chinese contemporary poetry in the 20th century. "Understanding" is not only the important scale in poetry production,but also a strong reading expectation of " contemporary " readers.The formation and growth of "understanding" tide,influenced by the thoughts of socialist realism,is also closely related to the construction of ideal paradigm of contemporary poetry,and is a checking strategy of mainstream ideology in the works.The generalization of "understanding" phenomenon brings many unexpected problems to the development of contemporary poetry.