This article divides into five sections: [1] Learn from the Classic Books, [2] Theory of Interest, [3] Theory of Thorough Enlightenment, [4] Learn from High-Tang Poetry, [5] Theory of Distinct Talent and Interest, probing the poetics of Yan Yu’s Canglang Poetry Talks from a standpoint of methodology. It sees Yan Yu’s poetics as a complete system of poetic theory, and especially possessing the significance of methodology. While most content of discourse is inherited past sages, it can cover various concepts and the context is coherent, because “theory of interest” makes much of having significance of ontology. Compared with poetics of other schools at that time, the main difference is return of poetry noumenon and poetic methodology. As far as methodology is concerned, he advocated returning to essentials of poetry, emphasizing that skills and academic attainment must be obtained via elementary learning and adhering to fundamentals. He proposed “theory of interest”, fused subject and object as one, visibly typical of his poetics. He composed poems with Buddhist Zen, emphasized the “enlightenment” phase of poetic method, and never rejected learning and study, thus making his methodology possess comprehensive completeness. He followed the trend of the Tang Dynasty’s halcyon days: not only having clear object, but also emphasizing characteristics of style and purport. He refuted the fault of making poems with talent and comment, proposing “theory of distinct talent and interest”, which alleviated insufficiencies of the Jiangxi school of poetry. In sum, Yan Yu’s poetics fused emotion with reason and united Tang with Song Dynasties, giving it epochal significance in poetic theory. For posterity it clearly defined a practical and feasible way of poetics, especially in methodology.