The utility model discloses a seal back paper processing system, include: deviation correction input unit for provide corrected signal to central control unit, central control unit for correction signal driver paper processing unit according to deviation correction input unit revises the processing position to the paper, paper processing unit for control signal according to central control unit does the source reason to the paper. The utility model discloses an utilize deviation correction input unit to provide corrected signal correction paper processing unit processing position to the paper, the user can make things convenient for, effectually compensate the precision of printing press through deviation correction input unit to swiftly, the problem of printing content positional deviation is handled to the efficient, the utility model has the advantages of being simple in structure and convenient in operation, good economy and social have. The utility model discloses but wide application in various seal after treatment equipment.