Abstract: The method is based on common calculation of cost-performance of coking coal in conventional coking enterprises，adding the impact of volatiles of different coking coal on gas yield. And the influence on economic index of blast furnace is also taken into account. Take an individual kind of coal as the standard coal，and indicators of the corresponding coke as standard indicators， then compare the indicators of coke from other kinds of coal with the standard indicators，with the comparison value shown in terms of influencing degree on blast furnace. And the cost of coke is used to indicate the influencing degree on blast furnace. And coke cost of different kinds of coal is used to indicate the cost-performance of each individual kind of coal.

Key words: Coking coal, Cost-performance, Evaluating model