A modular processing unit to be used for a fully automatic gravure cylinder manufacturing system, the fully automatic gravure cylinder manufacturing system comprising: at least two industrial robots; and a plurality of processing units installed within a handling range of each of the at least two industrial robots, the fully automatic gravure cylinder manufacturing system being configured such that an unprocessed roll is gripped by a robotic arm to be sequentially transferred to and processed by each of the plurality of processing units, the modular processing unit comprising: a pair of frame members provided upright so as to face each other; a first processing module comprising: a first processing bath module configured to receive the unprocessed roll to perform plate-making processing; a first beam module provided horizontal to a floor; and a first chuck module mounted on the first beam module, the first chuck module comprising a pair of chuck cones configured to grip both ends of the unprocessed roll so that the unprocessed roll is received in the first processing bath module; and a second processing module comprising: a second processing bath module configured to receive the unprocessed roll to perform plate-making processing; a second beam module provided horizontal to the floor; and a second chuck module mounted on the second beam module, the second chuck module comprising a pair of chuck cones configured to grip both the ends of the unprocessed roll so that the unprocessed roll is received in the second processing bath module, the modular processing unit having multi-stage structure with at least the first processing module and the second processing module being assembled onto the pair of frame members. at least two industrial robots; and a plurality of processing units installed within a handling range of each of the at least two industrial robots, a pair of frame members provided upright so as to face each other; a first processing module comprising: a first processing bath module configured to receive the unprocessed roll to perform plate-making processing; a first beam module provided horizontal to a floor; and a first chuck module mounted on the first beam module, the first chuck module comprising a pair of chuck cones configured to grip both ends of the unprocessed roll so that the unprocessed roll is received in the first processing bath module; and a first processing bath module configured to receive the unprocessed roll to perform plate-making processing; a first beam module provided horizontal to a floor; and a first chuck module mounted on the first beam module, the first chuck module comprising a pair of chuck cones configured to grip both ends of the unprocessed roll so that the unprocessed roll is received in the first processing bath module; and a second processing module comprising: a second processing bath module configured to receive the unprocessed roll to perform plate-making processing; a second beam module provided horizontal to the floor; and a second chuck module mounted on the second beam module, the second chuck module comprising a pair of chuck cones configured to grip both the ends of the unprocessed roll so that the unprocessed roll is received in the second processing bath module, a second processing bath module configured to receive the unprocessed roll to perform plate-making processing; a second beam module provided horizontal to the floor; and a second chuck module mounted on the second beam module, the second chuck module comprising a pair of chuck cones configured to grip both the ends of the unprocessed roll so that the unprocessed roll is received in the second processing bath module, the modular processing unit having multi-stage structure with at least the first processing module and the second processing module being assembled onto the pair of frame members.