Abstract: In response to the issues of high flexibility, complex processing, and heavy reliance on manual experience in pressure filtration process of tailings in coal preparation plant, this research explores intelligent pressure filtration control technology in coal preparation plant by implementing control methods such as automatic feeding of filter press feed bucket, automatic determination of the end of feeding of filter press, automatic recommendation of the number of filter presses to start and stop, automatic queuing discharge of filter press and pressure filter, and automatic monitoring of coal cake thickness of pressure filter. The results indicate that after the application of intelligent pressure filtration control technology, the daily average number of filter presses in the pressure filtration system is increased from 285 to 320, the filter press efficiency is increased by 12%. The workload of the post is reduced, and the labor cost is greatly reduced.