The invention relates to a finished pellet stacking/reclaiming system and method. The system is characterized by comprising a stacking device and a reclaiming device, wherein the stacking device comprises a stacking frame, a moving rail arranged on the stacking frame, a stacking belt conveyor and a mobile ore discharge vehicle in rolling connection with the moving rail; and the reclaiming device comprises an underground channel, a reclaiming belt conveyor arranged at the middle of the underground channel, a channel cover arranged at the top of the underground channel, an ore groove arranged on the channel cover and provided with an ore outlet at the bottom, and an electric valve arranged at the ore outlet of the ore groove. The method is as follows: the finished pellet is conveyed to the rubber belt of the stacking belt conveyor; an electric control device controls the mobile ore discharge vehicle to the designated position; and the finished pellet is discharged to the designated position of the finished pellet pile through the lambdoidal chute of the mobile ore discharge vehicle. The electric valve is opened to discharge the finished pellet in the ore groove onto the reclaiming belt conveyor and convey the finished pellet out of the stock ground. According to the invention, the occupied area is small, the cost is low, and the stacking operation and reclaiming operation can be performed at the same time.