Abstract: In view of the problems that each pump room in the multi-level drainage system of Wang⁃ po Mine depends on its own drainage to control，the drainage equipment is not updated in time，the mainte⁃ nance cost of drainage equipment is high，and the drainage efficiency is low，in order to minimize the pow⁃ er consumption of the system on the basis of safely and efficiently completing the drainage task，a set of drainage control system is developed according to the principles of information exchange and centralized control The system composition，main equipment and sensors are introduced，and the realization functions are described. The application results show that the system realizes single-level automatic drainage and multi-level coordinated and optimized drainage control. The operation of the water pump is safe and reli⁃ able，with strong anti-interference. The system data can be transmitted to the ground monitoring center through the underground ring network，the phenomenon of pump stop water hammer can be alleviated，the water leakage fault can be avoided，and the drainage efficiency of the mine can be improved by more than 10%，which can provide technical reference for similar mine drainage.

Key words: coal mine, underground drainage, automatic control