Abstract: The article describes sewer drainage centralized control system for the new dewatering wells in Yimin Open-pit from the aspects of hardware and software. Based on GPRS and modular components, the system ensures that the customer can "always online". The system can accurately and intuitively understand the functioning of the well dewatering pumps, mak monitoring more flexible, which improves the dewatering capacity in Yiminopen-pit mine.