Qian Zhong Shu criticized in his book "Tan Yi Lu" that some of the works from Wang An Shi (1021-1086) are imitation of the others, especially Wang An-Shi's lines collection poems."Lines collection poem" refers to the poems that are made up of lines from various poets. The author will merge these lines into his own work. In the later part of Wang An-Shi's life, he has written about 60 of such poems collections.In the past, the study of Wang An-Shi's poems collections is mainly in these three aspects:1. Using a literature perspective, the researchers discuss the creation of poems collection, its special features, its strength and weaknesses.2. From the perspective of Song Poem studies, the researchers analyze the theory of "adding new blood into the old stuff" and "master of various scholarships for poems" and the formation of poems collection in the Song Dynasty.3. With the emphasis on Wang An-Shi's poems collections, the researchers discuss the relationship between the style of "Jing Gong" and poems collection.Those researches have laid a firm foundation on Wang An-Shi's poems collection. Based on this foundation, this paper aims to provide a greater exploration and insight of Wang An-Shi's poems collection, focusing on the "Eighteen Songs of a Nomad's Flute" which has received many praises.This paper examines the origins of Wang An-Shi "Eighteen Songs of a Nomad's Flute" and analyzes the content as well as the narrative structure. The author of this paper continues by comparing it with Cai Yan's "Eighteen Songs of a Nomad's Flute" and providing an overview of the artistic achievements of "Eighteen Songs of a Nomad's Flute".