Abstract: Single-Wall Carbon Nanotubes (SWCNTs) and Multi-Wall Carbon Nanotubes (MWCNTs) possess excellent electromagnetic properties when SWCNTs and MWCNTs are separately embedded into host polymer such as epoxy. Even with low weight ratios ranging at about (0.1, 0.3, 0.5 and 1 wt.%) reflection losses are clearly increased after SWCNTs and MWCNTs were added because of the extraordinary properties of SWCNTs and MWCNTs. In this research many examinations have been carried out on the nanocomposite samples to evaluate the electromagnetic properties of these samples. Scanning Electron Microscopy (SEM), X-Ry Diffraction (XRD) and Raman spectroscopy are used to elaborate the hetero structure of the fabricated nanocomposite samples.