Abstract: The Ni-Cu coating was deposited on the surface of carbon fiber fabric by electroless plating process to prepare a new passive jamming material.The surface of Ni-Cu deposited carbon fiber fabric was analyzed with SEM and EDAX,the surface resistances of Ni,Cu and Ni-Cu deposited carbon fiber fabrics were measured and the binding strength of plating layer was measured by method of repeating cold and heat.The RCS values of Ni,Cu and Ni-Cu deposited carbon fiber fabrics with the same size were tested with radar cross section(RCS)measurement system.The results show that Ni-Cu deposited carbon fiber fabric has better uniformity,luster,adhesion and conducting ability.The RCS values increase with the increasing of conducting ability of metal deposited carbon fiber fabric in millimeter wave band,and the RCS value of Ni-Cu deposited carbon fiber fabric is maximal and is close to the academic vale.The Ni-Cu deposited carbon fiber fabric would be an efficient material to interfere millimeter wave.