The invention discloses a conducting-stirring friction hybrid heat source welding method and a piece of equipment, wherein, in stirring friction welding, a stir head and a workpiece are simultaneously insulated from the main body of a welding machine, the clamp of a fixed workpiece and a worktable, current is galvanized in the weld seam direction of the workpiece, the current and the weld seam through which the current flows produce resistance heat with the contact resistance of a friction stirring welding area, and the resistance heat together with stirring friction heat forms the hybrid heat source of the stirring friction welding. The method and the equipment of the invention have the following remarkable effects: 1. the limitation of the stirring friction welding on welding materials is broken through, leading the stirring friction welding to be used for welding such structural materials as black ferrous metals, superalloy, and the like; 2. the service life of the stir head can be improved; and 3. welding speed and welding quality can be further improved, thus improving the mechanical property of a welding joint. The method and the equipment of the invention can be used for the stirring friction welding, the preheating before welding, and the postweld heat treatment of such structural materials as carbon steel, stainless steel, and superalloy, etc.