TC4 substrate was remelting by laser remelting. Crystalline phase and microstructure of the coatings were analyzed by Xray diffraction (XRD), Scan electron microscopy (SEM) and Transmission electron microscopy (TEM). Tribological properties were examined using SRVIV tester under dry sliding condition. It has been found that the laser remelting treatment can improve the hardness and wear resistance of the asreceived TC4, and the crystal size of the asreceived TC4 can be refined after laser remelting.