This article deduces the background of the Song Dynasty, examines the theme of the shift of the focus and the development of writing techniques, to explore the characteristics of frontier fortress poetry in Song Dynasty, there are two main directions. First, in terms of theme, the poems on the frontier fortifications in Song Dynasty have been mainly works in the style of expressing calm and static style. The creators' perspective has shifted to the other directions of the frontier. Excluding war and escort, the frontier's natural landscape has been re- Creator may examine the possibility. In addition, in other works, creators occupy the right of cultural discourse in the narration of the poem and show the superiority of my tribe to the alien ones. Eventually, the creators' paranoia is extended to make the poem the pros and cons of North China. Second, as far as the writing technique is concerned, the composition of poetry thinking is reduced, and the performance of argumentative and documentary realism begins to emerge, which integrates the expression of similar prose, which is closely related to the later poems of Song poetry, Good news for the expression of tactics, or can echo each other, connected into a continuous context. It shows that the frontier poetry in the early Song Dynasty contained the possibility of relative pluralism. Many of the later poetic styles that became the mainstream in the Song poetry can be seen slightly in the frontier poetry of the early Song Dynasty.