Abstract: In order to solve problems of high cost, large occupied area and serious pollution, the paper proposed a design scheme of control system of underground jugging and gangue-backfilling, and introduced hardware constitution, communication mode, control process and software design of the system. In the system, upper computer uses iFIX configuration software to real-timely monitor and control field devices, lower computer uses S7-300 PLC and STEP7 software to realize functions of jigging control, gangue, coal cleaning, processing of slime water and emergency treatment, and MT8000 touch screen realizes human-computer interaction. The system realized underground jigging and gangue-backfilling in Xingdong Coal Mine for the first time in the whole country and got a perfect effect without any fault in running.