Ni-P-CB nanocomposite coatings were successfully deposited on the ABS plastic matrix by electroless plating. Scanning electronic microscopy (SEM) and X-ray diffraction (XRD) spectrometer were used to examine surface morphology and structure of the as-plated coating. Energy dispersive spectroscopy (EDS) is adopted to obtain the component analysis of the Ni-P-CB composite coating, and the infrared emissivity of coatings were investigated by IRE-I Infrared Emissometer. The SEM and XRD results indicated that the nanoparticles were dispersed homogeneously in Ni-P coating. The result of EDS shows that the CB content in coatings increases with the increasing of CB concentration lower than 4g/L in the solution, and Infrared emissivity study at wavelength of 8–14 μm of nanocomposite and its components showed that the composite possessed lower emissivity value than those of pure ABS plastic and Carbon black, and high conduction had great effect on emissivity of nanocomposites. Thereby, the nanocomposite coatings can be extended in application as a novel low infrared emissivity material.value.