The invention relates to a multistage tandem type smoothing reactor wiring structure and belongs to the technical field of power transmission and transformation technologies in power supply industries. According to the technical scheme, the multistage tandem type smoothing reactor wiring structure comprises a metal tube (1) and a plurality of smoothing reactors (2). The smoothing reactors (2) are connected in series through the metal tube (1), and the metal tube (1) comprises a tube body (3), connection fittings (4) and dry-resistance bus-bar terminals (5). The two ends of the tube body (3) are respectively provided with one connection fitting (4), the connection fittings (4) are connected with the dry-resistance bus-bar terminals (5) respectively, and the dry-resistance bus-bar terminals (5) are connected with the smoothing reactors (2). According to the multistage tandem type smoothing reactor wiring structure, the smoothing reactors are connected in series by using the connection fittings and the tube body, so that an integral tandem type smoothing reactor power transmission system is obtained. The multistage tandem type smoothing reactor wiring structure has the advantages of being high in mechanical strength, small in skin effect, low in loss and free from supporting devices, reducing engineering cost and greatly promoting stability and safety of products.