The cemented carbide nozzle processed has high hardness, high strength and excellent wear and corrosion resistance. Oil drilling is usually in a high confining pressure environment, so the nozzle needs to bear the high-speed impact of high-pressure abrasive in the working process, so it is easy to wear and failure. Cemented carbide materials play an important role in high-pressure abrasives. At the same time, cemented carbide nozzle can further improve the hardness, wear resistance and corrosion resistance of the nozzle by reducing the WC grain size during the preparation without reducing the material toughness.