The main courses to be systematically studied in welding specialty should be: materials science foundation, welding metallurgy (basic principles), materials connection foundation, materials connection methods and technologies, modern connection technology, welding structure and fixture design, welding equipment and automation, welding inspection technology, welding metallography, electronic brazing and assembly materials, arc welding power supply, mechanical drawing, mechanical design foundation, physical chemistry, engineering mechanics, mechanical engineering materials and material experiment technology.