The special compatibilizer was engineered by special modification technique of matrix resin grafted a variety of special active groups. This series products can greatly improve the compatibility between wood and fiber, enhance the and boundary strength between wood and fiber, promote wood fiber in plastic dispersing, can be used for a variety of plastic/wood flour, sawdust, straw, hemp fiber, Bamboo powder, shell and other composite systems. They can improve the tensile strength and elastic modulus of wood and plastic products, enhance the dimensional stability of composite materials, reduce bibulous rate and etc.