Abstract: The paper puts forward a new scheme for the coordinate control of multi-variable systems. For the process control problems composed of multi-subsystems, the robust coordinate controller is realized via introducing a reference model to systems and making each subsystem become a state-observer of the rcfercncc model. By analyzing we know the system has structure stability and asymptotieal coordination. Expcrimental results and application of the coordinate control to a tandem cold mill arc given. The results show that the system is anti-disturbanced and robust.