The utility model belongs to the field of welding, and particularly relates to a combination of a welding backing, a fusible embedded strip and a conducting rod. The combination comprises the welding backing with a groove in the top, the fusible embedded strip and the conducting rod, wherein the fusible embedded strip which is made of chemical components and matched with a welding part is arranged above the groove in the top of the welding backing, and the conducting rod is connected with the fusible embedded strip. In welding, the fusible embedded strip is arranged between truncated edges of a welding groove of the pipeline welding part, the welding backing is arranged on the back face of the welding groove, and the fusible embedded strip or the bottom of the welding groove is directly connected with a welding power source through the conducting rod to form a welding current loop. The combination can reduce the precision requirement for machining and assembly of the welding groove, reduce production cost and ensure the stable welding quality.