Abstract: The electrical properties of TA1 titanium plate after laser cladding pits, the surface and microstructure of the plated Cu foil were studied by eddy current conductivity meter, scanning electron microscope（SEM） and high current density copper plating test under simulated actual production conditions. The results show that when the pit defect of TA1titanium plate is repaired by the laser cladding process, the conductivity between cladding area, fusion area, heat affected area and substrate area is slightly different, with an average difference of less than 5%, but the appearance and micromorphology of the copper foil plated on each area are almost the same. Laser cladding technology is used to repair the defects such as the surface pit of the cathode titanium roller, which is expected to realize green repair and remanufacturing of the titanium roller.