Tracer 3D welding vision system is composed of special 3D welding camera Tracer P series, welding vision software TracerStudio and controller, etc. It can be matched with various types of mainstream welding robots to achieve complex weld feature extraction, track positioning, workpiece alignment and other functions. It can be used in the robot welding locating of steel structure, carriage plate, steel bar, air defense door, tube plate parts and other assembly errors, which can help users significantly improve production efficiency and reduce labor cost.