Welding robot is the main research hotspot of intelligent welding. With the rapid development of industry,the requirements for the performance of welding robots are constantly improving. The development status of welding robot intelligentialize is expound from five aspects: weld tracking system,off-line programming and path planning technology,remote welding technology,virtual simulation and human-computer interaction technology and transformation research technology based on PC. And the application of welding intelligentialize in welding robots,teaching,intelligent welding station systems and et al is summarized in China.