Abstract: The training and qualification mode and content of the international welder (IW) were introduced. There are two different ways of admission to the IW, which are namely the standard approach (admission method for full-time classes) and alterative approach. The skills and theoretical training plans as well as the assessment requirements and content of skills and theoretical certification were introduced, in which the increase in the degree of difficulty is corresponding to the deference in the welding methods and types of materials. In addition, The training process of MAG-135 international fillet welder (IFW) was introduced in detail by taking MAG-135 international fillet welder (IFW) training and qualification as an example. Finally, according to the training mode of vocational colleges in China, it was analyzed how to introduce or learn from the IW training system to improve the internationalization of the training methods of welding technology in vocational colleges in China.