Abstract: To address the difficulty of balancing retrofitting complexity, system reliability, and coordination levels in existing control schemes for filter press units in coal preparation plants, an intelligent coordinated control system for filter press units based on DCS (Distributed Control System) and a process expert system is proposed. The system consists of actuators, detection devices, core equipment, and control optimization units. It utilizes the Modbus TCP communication protocol to achieve real-time communication between the DCS and PLC, and relies on the DCS and the process expert system to implement the control logic design for each stage of the filter press unit process. Practical application results indicate that after the system was commissioned at the Limin Coal Preparation Plant of Wuhai Energy, the cumulative comprehensive process time of a single filter press was reduced by 1283 s, saving an average of 3.2 h per production task. Production efficiency increased by 31.6%, the number of operators per shift was reduced by two, and production efficiency per unit time improved by 15%. The system has achieved intelligent optimization of process parameters and full-process coordinated control for filter press units. The proposed system effectively enhances the automation level and production efficiency of filter press units, reduces manual intervention, provides a highly reliable and easy-to-implement technical path for the intelligent coordinated control of filter press units in coal preparation plants, and enriches the research framework for the intelligent collaborative control of coal preparation equipment.