The present invention relates to a hidden arc welding bogie, which belongs to a field of auxiliary welding equipment technology. The present invention mainly adopts a control box connected with a crossbeam. A welding wire disc is connected with the crossbeam by damp structure. The crossbeam connected with an upright post. A lifting ring is connected with an upright post. A conducting filament frame is connected with the crossbeam. A funnel is connected with a wire feeding device. An upright post is connected with an ambulatory control box. A funnel nozzle groupware is connected with the funnel. And an ambulatory clutch is connected with an ambulatory control box. The present invention is characterized in that the wire feeding device is connected with the upright post by a cross fine adjustment structure, and the fine adjustment structure is connected with the ambulatory control box by a connecting rod. The present invention is easy to be adjusted in operation and realize a change straight bead welding. The adjustment is convenient, fast and precise, which can meet requirements for welding in different directions. And the present invention has lighter weight and is easy to move, which is applicable for butt weld, lap weld and fillet weld of various middle or thick armor plate structure.