The rapid urbanization and consumption-driven lifestyle have led to increasing waste, making the construction of “zero-waste cities” a crucial issue in current environmental governance. In this context, zero-waste landscape design is an indispensable component. By artistically transforming ready-made objects, ready-made art not only raises public awareness of environmental protection but also effectively reduces waste generation at its source. This study first reviews the evolution of ready-made art; secondly, it analyzes the materiality of ready-made objects from the perspective of the materiality-turn, exploring the relationships between humans, objects, nature, and technology. It then identifies the challenges and missions faced by zero-waste landscape design, examines the influence of ready-made art movements on landscape architecture, and attempts to fill the gap in the artistic expression of zero-waste landscape design. Finally, through case studies, it summarizes the application models of ready-made art in zero-waste landscape design and its implications for the landscape design field, aiming to provide valuable references for future zero-waste landscape design practices.