The invention discloses a double-torch pipeline full-position automatic welding machine. The double-torch pipeline full-position automatic welding machine comprises a welding tractor which is arranged on a guide rail, a welding control box, a wire feed box, a welding power supply and a manual control box; the welding tractor is provided with a travelling mechanism, two welding torches which are controlled by a swinging mechanism, and a height adjustment mechanism; a controller is arranged in the welding control box; the double-torch pipeline full-position automatic welding machine is characterized in that: the welding tractor is provided with a laser tracking probe and a sensor which are connected with the controller in the welding control box respectively; and the controller is connected with a computer. A welding line is automatically tracked by the laser tracking probe, and a welding process is not needed to be interfered by a welder, so welding automation is realized and labor intensity of the welder is reduced; under the control action of the computer, the welding power supply provides welding current and arc voltage which are matched with the position, and welding forming quality is improved; and a cable number is simplified and maintenance and expansion capacity of a system is improved.