Ni-WC composite coatings prepared by flame spraying were remelted with CO2 laser, and the morphologies of the composite coatings by laser remelting were observed with scanning electron microscopy (SEM). The micro-hardness (HV) of samples with the different volume fraction of WC particle was tested, and the effects of WC particles on microstructure and wear resistance were analyzed. It is shown that the coating pores prepared by flame spraying increase with the content of WC particle, and the pores are reduced obviously after laser remelting; The coating hardness after laser remelting increases 20% than that by flame spraying, which attains the biggest when WC volume fraction is 6%; The coating resistance wear after laser remelting increases with the increase of WC content. The best wear resistance is obtained when the WC volume fraction is as high as 6%.