Carbon fiber reinforced aluminum matrix composite is a very attractive material for the aerospace technologies. However, the poor wetting ability and the chemical reaction between the carbon fibers and aluminum make some difficulties for the fabrication of such composite. In order to improve the wetting behavior and refrain the chemical reaction, to prepare an interphase between carbon fiber and aluminum matrix is essential. In this paper, conventional electroplating equipment was improved to deposit copper interphase on the carbon fibers. It was found the improved equipment could effectively prepare a homogeneous interphase on carbon fibers with the help of plating additives. On this basis, the influence of fiber pretreatment, PH value of electroplating solution and plating time on the quality of copper interphase was investigated. The scanning electron microscopy and X-ray diffractometer were applied to characterize the interphase.