Abstract: The mines of Shendong Company mostly distribute in northwest district, and the hydro-geological condition is relatively simple in general. However, parts of well fields are quite large and coal production is high; a mine tends to have more than one panel mining at the same time, which causes larger mine water inflow; in this situation, the traditional central water pump house drainage method does not work well. Then, to increase the drainage capability of mine and guarantee the reliability of drainage system, the divisional drainage method is used and independent drainage system in subareas is constructed. It turns out that divisional drainage system is safer and more reliable, and drainage efficiency improves obviously and drainage costs are reduced significantly, which guarantees the safety production.