Abstract: In view of problem of nonuniform antifreeze caused by artificial spraying antifreeze of coal train in coal preparation plant, an automatic antifreeze spraying system of coal train compartment based on CC-Link was designed. The system uses CC-Link field bus technology to build field control network of spraying devices and pressure pump station of antifreeze, and realizes linkage among devices and real-time monitoring of the system. The practical application showed that the system avoids waste of antifreeze, and improves work efficiency.