The teaching content is mainly composed of two parts. One is the teaching of the robot's movement trajectory, and the other is the teaching of the robot's working conditions. The teaching of robot motion trajectory is mainly about the trajectory to be moved at the end of the wire in order to complete a certain operation, including the teaching of the type of movement and the speed of movement. The teaching of robot operation conditions is mainly for obtaining good welding quality, and teaching the welding conditions, including the material of the metal to be welded, the thickness of the plate, the position of the welding torch corresponding to the shape of the weld, the welding parameters, and the control method of the welding power source.