With the advancement of underground construction technology, there are now various tunnel excavation equipment options available, such as hard-rock tunnel boring machine (TBM), shield TBM, and New Austrian tunneling method. Each type of equipment has distinct characteristics suited to specific scenarios. The selection of tunneling equipment is a complex, multi-faceted issue that involves several factors, including technical feasibility, environmental adaptability, economic considerations, and compatibility with the construction team. The selection of tunneling equipment is essential for tunnel projects, since the inappropriate tunneling machine may reduce the efficiency, cause faults, and even may lead to casualties. Moreover, the modification of tunneling equipment is very time-consuming and costly. In order to maximize profits and mitigate risks in tunneling construction projects, the application of multi-criteria decision-making (MCDM) techniques that integrate and evaluate varied factors would be beneficial in the tunneling equipment selection.