Assembly and Welding Joint Intelligent Work Island is mainly used in the welding production of steel structure prefabricated buildings, steel structure roof beams, H-shaped steel beams and columns, and other types of intelligent production lines. The compatibility of the welding joint work island with the ground rail and the adaptability of the welding joint workstation. The system deeply integrates assembly and welding processes, and interacts with PLC signals after importing models to determine incoming material data. By scanning the base material and component materials through a visual system, accurate material retrieval and placement positions are obtained. The weld seam type and data are obtained through a model, and then integrated with a fabric welding expert library to automatically generate welding programs and execute welding.