Abstract: The J-TEXT device is a medium-sized Tokamak which was reconstructed in Huazhong University of Science and Technology, and it has been operating since 2007. J-TEXT is a distribute control system including various plant systems. In order to improve the efficiency of plant system integration, maintenance and upgrade, and to manage each plant system, control operation status, guarantee security of devices and operators, J-TEXT CODAC system was designed according to the design idea of ITER CODAC. J-TEXT CODAC system provided a unified design model and relevant design standards for plant system, adopted EPICS software as the communication layer, and developed global control plant system, timing and synchronization plant system and global interlock plant system. The old subsystems in J-TEXT were reformed and integrated in J-TEXT CODAC system. J-TEXT CODAC system was deployed in J-TEXT recently, and it has been operating properly in the experiments since the spring of 2012.