Tunnel excavation is a cornerstone of modern infrastructure, facilitating the development of railways, highways, water conservancy projects, hydroelectric power stations, municipal utilities, and even civil defense structures. As urbanization accelerates and the demand for efficient subterranean construction grows, the methodologies employed in tunnel excavation become increasingly critical. Traditionally, explosive rock blasting has been the predominant technique for breaking through hard rock formations. However, this method presents significant safety and environmental challenges, prompting the emergence of innovative alternatives like the CO₂ Rock Blasting System Technology. This article delves into the application of CO₂ rock blasting systems in tunnel excavation, highlighting their superiority over conventional explosive methods through detailed technical insights and data-driven analysis.