Abstract: In order to mine frontier hot spot in the field of welding technology,the wisdom buds patent data platform was selected to study global development trend,technological frontier hot spots,key research and development team of welding hot frontier technology through the patent data analysis method,and to show innovation status in this field by visualization method. The results showed that the development of global welding technology experienced stages of germination,growth and maturity. The United States,Japan and Germany were far ahead in high value patents. China had a large number of welding technology patents,but the quality need to be improved. Welding hot spot technology mainly focused on friction stir welding,laser welding,electronic packaging and other technologies,and the application concentrated upon light alloy,mechanical parts,circuit chips,fuel cells and other fields. Some suggestions on the layout of welding frontier technology in China were put forward.