This paper re-examined Shin Seok-jeong's poetry world in terms of ecological participation consciousness by paying attention to poetry, prose in the complete collection of Shin Seok-jeong published in 2009 and recent discovered poetry. In particular, the change in the meaning of "Earth" in Shin's poem was analyzed in relation to the aspect of pastoral of his poem. In the image of "Round Earth," which appears in the early days of Shin, where Tagore's influence is found, the sadness that nature has stepped down as an impossible hitter stands out. In addition, the pursuit of pastoral nature that appeared in the early days of Shin also appeared as a criticism of imperialism, which is embodied through the representation of ‘map’. On the other hand, it is revealed that the pastoral nature shown in the early poetry was lost due to the influence of the Korean War(1950). Showing this is the image of a "narrow earth." Through this transition of mid-term poetry, the will to participate in the politics and insight into history stand out in the later poetry. In particular, a unique perspective on natural and human history appears as an attention to ‘mountain’. Through this, Shin reproduces "Earth" as a home where countless different lives live. While acknowledging the agency of natural objects, an aspect of ecological pastoral that shows an attitude to coexist with them is found.