Two species of native Quercus wood（Q.variabilis and Q.acutissima） were selected for evaluating chemical compositions in the bark,sapwood and heartwood,to aim at providing scientific information for making better cork products and wood-based panels.It was suggested that in making cork products,more attention should be given to the changes of bark phenyl alcohol extract content,ash content,pH value and buffer capacity;while in making panel products,it should be taken into consideration the differences of cellulose,lignin and pH value between the two species and between sapwood and heartwood.