Multi-wall carbon nanotubes(MWCNTs) were synthesized by Helicon Plasma-Enhanced Chemical Vapor Decomposition (helicon-PECVD), and metal nano-particle coating on the surface of cabon nanotubes was performed with helicon-PECVD. We used CO as a carrier gas and ferrocene as catalyst, and then we successfully obtained the MWCNTs, diameter of 10nm. The structural and morphological properties of MWCNTs were investigated by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), Raman spectroscopy. Also, using H2 plasma treatment with ferroncene, we coated metal nano particles on purified CNTs(metal CNTs). Metal-CNTs were confirmed using EDX, SEM and Raman spectroscopy.