For road anti-icing system that extract shallow geothermal energy from tunnel structures, The overall laying scheme of buried pipes under the tunnel is proposed based on the structural characteristics of the tunnel open section. On the basis of the overall scheme, the overall heat transfer characteristics of buried pipes on the road surface and the influence of buried pipe spacing on the heat exchange performance of buried pipes on the road surface are analyzed by establishing a numerical model of buried pipes under the road. The results show that, 1) The heat exchange pipe under the pavement should be laid in the concrete pavement layer, and laid parallel to the slope with single U-shaped; 2) Within a certain range, the adjacent U-shaped pipe spacing is the main factor affecting the effect of the road surface buried pipe anti-icing system, and the change of the spacing of the inlet and outlet has no obvious impact on the effect of the buried pipe anti-icing system. Finally, the analysis of this study relies on the best cost-effective buried pipe laying scheme of the project, which provides ideas for similar engineering applications.