Abstract: Water in the gas drainage pipeline seriously affects the gas drainage effect and mining safety production, the introduction of intelligent water system can rule out the pipe water from the gas drainage system quickly and efficiently. The system uses PLC intelligent control technology to achieve one-to-many control for the solenoid valves of water collectors, and uses the liquid level sensors to detect the water level of collectors. The system puts sludge filter in the front of water collector and sets outfall in the bottom of water collector. The reliability and velocity of the system are provided through the laboratory debug and on-site industrial test, and the system can discharge the water of the gas drainage pipeline effectively.