The utility model discloses a welding machine. The welding machine comprises a welding execution mechanism (1), a welding tool (2) and a welding working table (3); the welding tool (2) is arranged on the welding working table (3), and the welding execution mechanism (1) is arranged on the welding tool (2). A rack (4) is arranged on the welding working table (3), a left welding station (5) and a right welding station (6) are arranged on the left side and the right side of the rack (4) respectively, and an insertion plate (7) for separating the left welding station (5) and the right welding station (6) is arranged in the middle of the rack (4). By means of the welding machine, the welding mechanization is achieved; in addition, the welding space is sufficiency used by the welding machine, and the safety performance, the welding accuracy, the efficiency and the welded product quality are improved.