Abstract: Stud welding is widely used in the production of steel bridge structure. However, the stud welding has been using manual welding for a long time, which short comings are worse welding environment for welder and operator around, larger labor intensity for welding operator, lower efficiency of welding production, and more unstable in welding quality. With the continuous development of artificial intelligence and huge investment of innovation, the automation of stud welding production is increasing sharply, and the welding quality stability and welding production efficiency are further improved. But whether manual stud welding or intelligent stud welding,the stud welding still has some welding defects and welding quality problems during the welding test and and the welding production. It introduces quality standard of stud welding, summarizes the common welding defects and welding quality problems during the welding test and the welding production, finds and analyzes the causes,and proposes the repair process and quality assurance measures, hoping to further improve the degree of welding intelligence and welding production efficiency, and further strengthen the welding quality management of stud welding during the manufacturing of steel bridge structure.