The invention discloses a method for winding a secondary winding of a parallel damping arc suppression coil. The secondary winding is divided into two sections, the two sections are wound on two upper yoke core columns of the arc suppression coil respectively by one layer, in the winding process of the secondary winding, the techniques of adding supporting bars, splay binding, insulation reinforcement at the head end and the tail end and the like are adopted, and finally the secondary winding is formed by casting epoxy resin normal-temperature casting materials. The secondary winding has the advantages of being high in mechanical intensity, good in insulating performance, low in loss and low in cost, the production cost and the operation cost of the arc suppression coil are lowered, and the reliability of operation of an arc suppression coil body is improved.