To the actuality of land resource shortage caused by the mountainous terrain in the Wenxi operation area of Lishui Port,this article studies the relationship between the port road transportation and the rear expressway,the method of connecting the port road to the 330 National Highway,and how all relevant parties along the port road can access it.A construction idea is proposed to extend the depth of the land area through the realignment of provincial roads.After the realignment,a combination of blasting excavation and mechanical excavation is used for deep excavation of road cuttings to reduce the impact of port clearance roads on highways.Interconnections are established within tunnels to connect with national highways,and road elevation design is based on the access elevations of all parties along the route.By taking several measures under the influence of complex surrounding environments,road realignment can meet the requirements of convenient transportation,safe passage,and usage.Relevant engineering experience can be used as a reference and inspiration for similar projects.