In industrial production, welding robot has the characteristics of stable welding quality, adaptability to working environment, and improvement of production efficiency. It is widely used in automobile manufacturing, construction machinery and metal structure. Metal is one of the most common important materials in industrial manufacturing. In the manufacturing process of these industrial products, welding is a kind of processing method which connects all kinds of processed parts to make products according to the corresponding design requirements. In developed countries, the complete set of welding robot automation production line equipment has become the mainstream of automation equipment and the future development direction. In today's high quality and high efficiency welding production, welding robot plays an extremely important role. The research, development and application of industrial robot technology have greatly promoted the development and progress of world industrial technology. The prospect of surgery.