Since its publication in 2020, Shuggie Bain, the debut novel by Scottish author Douglas Stuart, has attracted scholarly attention for its unique ecological perspective. Utilizing the theoretical framework of eco-criticism and drawing on the tripartite division of ecology proposed by Chinese scholar Lu Shuyuan, this paper provides an in-depth interpretation of the novel Shuggie Bain in three dimensions of natural ecology, social ecology, and spiritual ecology, aiming to reveal the ecological imbalance and human alienation in Glasgow, a major industrial city in Scotland during the 1980s. This interpretation will also provide readers with a new research perspective for analyzing Shuggie Bain, enhancing their understanding of the rich ecological implications of it.