Aiming at the current problem that it is difficult to achieve intelligent production in small production workshops,a set of intelligent welding system was designed,so that the robot could accurately track the route of lap-jointed seam and butt-jointed seam during welding process.Taking ABB’ s irb1600 robot as the carrier,the communication between the robot and the sensor was realized; by calibrating the vision of the sensor and setting the algorithm,the sensor could recognize the characteristic points of the welding seam,and the position error between the characteristic points and the calibrated point was feedback to the robot correction signal.ABB robot special programming instructions were used to compile programs,the vision of the sensor was monitored and adjusted in real time through the master computer.The experimental results show that the system can accurately track different weld conditions,effectively improving welding quality and efficiency.