Intersection evaluation is the foundation and prerequisite for improving intersection traffic efficiency and enhancing intersection safety. To enhance the scientificity, accuracy and objectivity of intersection evaluation, the theory of extenics is introduced and the evaluation method for intersections based on the entropy weight-matter-element extension model is constructed. This method selects the saturation, delay index, queue length, traffic conflict index, intersection geometric features and intersection facility configuration as the evaluation indexes. The entropy weight method is used to calculate the weight of each index, and the matter-element extenics analysis method is employed to conduct a comprehensive evaluation of intersections. The research result indicates that the comprehensive evaluation method for intersections based on the entropy weight-matter-element extension model can not only evaluate the grade of intersections, but also indicate the degree of bias towards this grade. The evaluation results provide data support for the improvement design of intersections.