Abstract: Line selection is one of the most important tasks in the early stage of coal highway construction, in order to evaluate the line selection from the perspective of traffic safety, this paper adopts the close-value method and selects plane and vertical indicators related to traffic safety, so as to build a complete evaluation index system. The evaluation index system is applied to the project example, and K line and B line of a certain road section of coal highway are compared from the perspective of traffic safety. The evaluation results of the close-value method show that K line is better than B line, that is, the safety of K line is better, and the line selection result of the close-value method is consistent with the actual engineering line selection, which indicates that the evaluation system constructed in this paper is effective, and it is feasible to use the close-value method to evaluate line selection of coal highway.