闻一多的新格律诗理论和何其芳的现代格律诗理论是新诗史上最重要的两种格律理论。前者奠定了新诗格律的基本框架。后者在批判地继承前者的基础上创造出更科学、更自由、更成熟的格律规则。从形成原因、具体规则和历史得失三个角度比较两种理论是本文的归旨。 Wen Yiduo’s New Theory of Metrical Poetry and He Qifang’s Theory of Modern Metrical Poetry are the two most important theory of theories of the new poetry. The former has laid the basic framework of the new poem. The latter created a more scientific, freer and more mature law of rules on the basis of critically inheriting the former. From the formation of reasons, specific rules and history of the pros and cons of three perspectives is the purpose of this article.