Abstract: Issues related to the engineering quality of highway tunnels are introduced, and the causes of geological hazards are analyzed using collapse, rock burst, water inflow, mud burst, karst, slide, and gas as examples, and technical countermeasures are proposed. The cases concerning portal quality of tunnels adopting the“advanced portal construction method”and a“special-shaped shed-tunnel structure with large span”are presented. The measures to guarantee highway tunnel quality and development trends are described in terms of mechanization, assemblage and informatization.