The invention relates to the field of architectural decoration, in particular relates to a steady punching frame seat structure. The steady punching frame seat structure comprises a seat board, a punching frame supporting rod connected to the bottom of the seat board, a fixed leaning plate vertically and fixedly arranged on the seat board, a fastening plate arranged on the seat board in a manner of being opposite to the fixed leaning plate and capable of moving along the surface of the seat board, and a hoop element riveted on the fixed leaning plate, wherein a double-screw bolt provided with internal threads and screwed with the top end of the punching frame supporting rod protrudes from the bottom of the seat board downwards, a reinforcement component used for reinforcing the strength of the double-screw bolt and resisting against vibration and fixedly connected with the bottom surface of the seat board is arranged on the outer surface of the double-screw bolt, buffering anti-vibration pads are fixedly arranged on the opposite surfaces of the fixed leaning plate and the fastening plate, an adjusting groove is formed in the seat board along a direction parallel to the surface of the seat board, and a sliding component matched with the adjusting groove and capable of moving towards or away from the fixed leaning plate along the adjusting groove is arranged at the bottom of the fastening plate. The punching frame seat structure is firm, is convenient to install and is steady after a perforating machine is fixed, so that the perforating process is safer.