The invention relates to chain production equipment, and discloses a chain pre-pulling and section-dismounting integrated device. The chain pre-pulling and section-dismounting integrated device comprises a machine frame, a table surface, a pre-pulling mechanism and a section-dismounting mechanism. The table surface is divided into a pre-pulling area, a chain stacking area and a section-dismountingarea. The section-dismounting mechanism comprises a plurality of sections of chain wheels, a chain guide channel, a first air cylinder, a positioning toothed plate, a second air cylinder, a chain sheet pushing plate, a vertical rail, a section-dismounting air cylinder, a sliding table, a section-dismounting seat, a steel needle, a servo motor, a chain shaft collecting box and a chain sheet collecting box. The positioning toothed plate and the chain sheet pushing plate are sequentially arranged on subsequent working stations of the sections of the chain wheels. The vertical rail is erected above the positioning toothed plate and the chain sheet pushing plate, the section-dismounting oil cylinder is fixed to the top of the vertical rail, the sliding table is installed on the vertical rail,the section-dismounting seat is fixed to the sliding table, and the steel needle is arranged at the bottom of the section-dismounting seat. The chain shaft collecting box and the chain sheet collecting box are correspondingly located below a chain shaft hole and a chain sheet hole. According to the chain pre-pulling and section-dismounting integrated device, two processes of pre-pulling and section-dismounting of chains can be realized on one device, the degree of automation is high, the production efficiency is high, and the safety is good.