The carbon fibre electroplated continuously by a compound coating ofNi prior to Cu, the composite made of this carbon fibre together with Cu substratehave been investigated. The compatibility, between carbon fibre and duplex coatingand flexual strength, linear thermal expansion coefficient and electric resistivity ofthe composite have also been examined. Owing to the transformation of face-cen-tred-cubic Cu-Ni solid solution in the compound coating under high temperature,both the nodulizing shrinkage of Cu coating alone and the graphitization of carbonfibre accelerated by single Ni coating with a consequent loss of strength were imp-roved. Because of the dissolving of minute carbon fibre in the interfacial Cu-Ni so-lid solution, the bonding strength and flexual strength of the composite were signi-ficantly increased, and the length of carbon fibre pulled out on the fracture surfa-ce was obviously reduced. The interface of the composite seems to be of the disso-lution bonding.