The regulated-verse poems focus on the sound regulations and the parallelism. The maturity and development of the regulated-verse poems benefited from the sound regulations, the parallelism, and the grammar, as well as the structure of the poetics in the Tang dynasty. Many works on the poem standards appeared in the Tang period have encouraged the popularity of poems at that time.This paper examines two fragments (S.3011v and P.3353v) of the Poem Standards (Shige) from Dunhuang in order to explore the textual and content features of thePoem Standards in the Tang. In addition, it also compares them with other materials from Dunhuang, Turfan, and Japan, and observes the experience of Tang children in learning how to compose poems and also to see how the Tang poets practiced the parallelism in their poems. This paper argues that in the Tang the maturity and popularity of the regulated-serve poems not only benefited from the natural trend of the poem genre, the promotion of the rules, and the influence of the civil examinations, but also were influenced by the style requirements and circulation of the Poem Standards.