Abstract: The vitrinite obtained from Ewirgol coal was added to the standard anthracite as inert component with differ- ent blending ratios for preparing cokes. The drum strength,the characteristics of solution loss reaction and the micro- crystalline structure of these cokes were studied. The addition of inert component has little effect on the drum strength of cokes (G′>90% ). With the increase of inert component content,the maximum reaction rate (rmax ) decreases first and then increases,however,the temperatures of the initial reaction ( Ti ),the maximum reaction rate( Tmax ) and the finishing reaction (Tf ) first increase and then decrease. And the extreme values of these parameters appear when inert component content accounts for 40% -60% . Also,the Coats-Redfern integration method and XRD and SEM analysis show that the coke with 50% inert component content has a greater activation energy of coke solution loss reaction and the highest degree of ordering characterizes,and the matrix of the coke is compact and homogeneous. Therefore,the op- timum ratio of active-inert components for the Ewirgol coal is 1 ∶ 1.