The invention discloses a cloth winding drum split winding mechanism. The mechanism comprises a machine frame, wherein a support frame and two placement frames are fixed to the top surface of the front end of a top plate of the machine frame, winding support blocks are fixed to the left part and the right part of the top surface of the rear end of the top plate of the machine frame, and a windingroller is arranged between the two winding support blocks. According to the cloth winding drum split winding mechanism, the two ends of a cloth winding drum roller can be mounted on a roller body connecting seat, and the roller body connecting seat can be automatically lifted, lowered and conveyed; when the mechanism is disassembled, the roller body connecting seat and the cloth winding drum roller are taken out at the same time, and a new cloth winding drum roller with a new roller body connecting seat well mounted is directly lifted, conveyed and lowered, thus completing the installation, and in this way, automatic mounting and dismounting of the cloth winding drum roller is achieved, high efficiency and fast replacement can be achieved; and meanwhile, a winding structure is simple in structure, and the winding roller and a rotary connecting block can be automatically mounted on the winding support blocks through the operation of a mobile main motor, mounting and dismounting are convenient, the automation degree is high, and the production efficiency is greatly improved.