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An efficient method was proposed to prepare high-performance conductive Aramid-Carbon Blend Fabrics (ACBF) with cobalt-nickel (Co-Ni) alloy coatings,which is conducive to industrial production.The grid-like substrate composed of aramid and carbon fibers was innova-tively used in flexible Electromagnetic Interference (EMI) shielding materials.The natural network structure is advantageous to the uniform deposition of metal particles to the establishment of con-ductive pathways subsequently in order to improve conductivity.The induction of a synergistic effect from Electromagnetic (EM) wave-reflection and EM wave-absorption through the whole carbon-Co-Ni-ternary system notably enhanced the EMI Shielding Effectiveness (SE) value to an average of 42.57 dB in the range of 30-6000 MHz.On the other hand,together with the inherent toughness of the alloy coatings,the tensile strength of the aramid fibers used for bulletproof made a significant contribution to the desired mechanical properties.The light weight of the resultant composite made it applicable to aerospace vehicles simultaneously.X-ray Photoelectron Spectroscopy (XPS) was conducted to investigate the variations of elements and groups on the sample surface in pre-treating process.The elemental components and surface morphologies of fabric samples during dif-ferent stages of the process were investigated by Scanning Electron Microscope (SEM) and Energy Dispersive spectrometer (EDX) measurements.X-Ray Diffraction (XRD) results indicated that the obtained Co-Ni alloy coating had a combined Hexagonal Closed-Packed (HCP) and Faced-Centered Cubic (FCC) crystalline phase.The relatively high corrosion resistance demonstrated in different acid and alkaline conditions was instrumental in more complex environments as well.