A dense Al-SiC_p nanocomposite coating with high volume fraction of nano SiC_p reinforcement (60 vol.%) was fabricated through cold spraying deposition of milled Al-60SiC_p nanocomposite powder in the present paper. Microstructure evolution of Al-SiC_p nanocomposite powder during ball milling process, microstructure characteristics and hardness of sprayed Al-SiC_p nanocomposite coating were studied. Al particles underwent fracture deformation and nano SiC particles were evenly distributed in the soft Al base material after ball milling. Dense Al-SiC_p composite coating had been successfully prepared through cold spraying solidification of the milled nanocomposite powder. Nano SiC particles uniformly distributed in the as-sprayed Al-SiC_p composites coating. Microhardness of Al-SiC_p nanocomposite coating was highly reach up to 530±53 Hv_0.3 compared to 34±3 Hv_0.3 for the pure Al bulk.