用灰色关联法，对影响煤表面和反应性的因素的关联度进行排序。用液氮等温吸附法测煤及焦的表面形态，用热天平法测煤及焦的反应性，通过对各因素关联度的计算，找出影响煤表面和反应性的主要因素，并探讨各因素在反应中的影响程度。结果表明，镜质组、煤阶对反应性及表面的影响较大。 The gray correlation method is used to rank the degree of relevance of the factors affecting coal surface and reactivity. The surface morphology of coal and coke was measured by liquid nitrogen isothermal adsorption method, the reactivity of coal and coke was measured by thermometry, and the main factors affecting the surface and reactivity of coal were found by calculating the correlation degree of each factor. The degree of influence of factors in the reaction. The results show that vitrinite, coal rank on the reactivity and the surface of a greater impact.