The invention discloses a material belt subpackaging machine, a material belt subpackaging machine system and a material belt subpackaging method. The subpackaging machine comprises a feeding device,a guiding device, a moving platform, a material belt transition device, a separating receiving device, a slitting device, an adhesive tape pasting device, a pressing device, a machine frame and a control module. Due to the fact that the subpackaging machine is reasonable in structural design, small in occupied space, high in automation and integration level, and high in subpackaging speed, the design thought that formerly, the integer quantity of packaging material discs do not subpackaged, and the tail disc material allowance is counted by improving the intelligence of the automatic system isbroken through, the steps that the integer quantity of packaging material discs is divided according to the actual production requirements, thus, the integer quantity of packaging material discs be subpackaged into two or more subpackaging material discs, accordingly, tail disc material allowance counting is thoroughly given up are designed, material effective management is substantially improved, the material management time is saved, and remarkable effects on material control and cost reduction in the production technology are achieved.