The invention relates to a cylinder stacking system, and belongs to the technical field of cylindrical part storage and transportation equipment. The technical problems that at the present stage, cylinders are manually hoisted to be stacked through a sling, the efficiency is low, and the precision is poor are solved. According to the solution, the cylinder stacking system comprises a fixed rack, amain beam mechanism, a lifting mechanism, a grabbing mechanism and a pneumatic system; the fixed rack is arranged on the ground, a conveyor is arranged below the fixed frame, and cylinders are placedon the conveyor; and the main beam mechanism is arranged in the manner of stretching over the fixed frame, the lifting mechanism is mounted on the main beam mechanism, and the grabbing mechanism andthe pneumatic system are mounted on the lifting mechanism. According to the cylinder stacking system, the mode of the whole cylinder stacking work can be changed, the manual stacking work of hard andsimple manual labor is changed to a full-automatic work process, the work efficiency is greatly improved, the cylinder stacking system is an innovation of the whole market, and automation developmentof the whole industry can be promoted.