Abstract:The underground parking link is mainly used for the central business district with dense traffic flow and pedestrian flow. By connecting the underground parking of various high-density development plots, the point-to-point services are provided so as to achieve the higher arrival and departure efficiencies, and at the same time, the ground traffic volume is reduced to a certain extent, and the quality of the ground traffic environment is improved. With the requirement of improving regional quality, the underground parking link is also applicable in slow-moving blocks where ground quietness is required. Taking the road system of Sanlinwan Town as an example, the ideas for solving the traffic problems in small-scale blocks are proposed. The overall design of underground parking link in the town is expounded in detail, aiming to provide reference and reflection for similar engineering projects.