Laser cladding was introduced to the coating technology of nano-structured ceramic,cladding experiments of nano-SiC by laser were carried out and effects of technique parameters on laser cladding were analyzed systematically.Then,a reasonable laser cladding technique of nano-SiC is gotten,the component and the microstructure of the nano-structured ceramic coating fabricated in above experiments were tested with X-ray diffraction(XRD) scanning electro microscope(SEM),etc.It is indicated that with the cladding technique gotten above,problems on the overgrowth of the coating material grain size,the density,etc,could be solved effectively to get high quality,nano-structured SiC ceramic coating.During the cladding procedure,part of the nano-SiC powder is decomposed to nano silicon and nano carbon.