<p>This study investigates the enhancement of corrosion resistance of WC-Co cemented carbide in sodium chloride solution by using surface microtexturing. Three distinct microtextures (dot Matrix (M), Groove (G), and Roughened surface (R)) were fabricated on polished substrates using a nanosecond ultraviolet laser system. The corrosion behavior was evaluated via electrochemical measurements including open circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy in a 3.5&#xa0;wt.% NaCl solution. Surface morphology and chemical composition were characterized using scanning electron microscopy and x-ray photoelectron spectroscopy. The results demonstrate that the corrosion resistance of cemented carbide is improved by using appropriate laser texturing process. The corrosion resistance of textured cemented carbide with groove pattern is higher than that of other textured one with the pattern of dimple array or roughened surface. The oxide layers and roughness of the textured surface jointly affect the corrosion resistance of cemented carbide. The higher roughness of the surface and the easily peeled off oxide layer with microcracks make the corrosion resistance of the sample R lower than that of the sample G with the opposite situation of texture and surface roughness.</p>