Abstract: Abstract：In view of the problems of the traditional design mode of the main drainage pump room, such as complex layout, many links, long construction period and late equipment maintenance, this paper puts forward the optimization scheme of using the suction pool instead of the distribution well, the distribution lane and the suction well. After the design and optimization, the whole main drainage pump room is only composed of the pump room and the suction pool, and is applied in the second level main drainage pump room in the eastern area of Guqiao Coal Mine. Compared to the traditional scheme, the construction period is shortened by about 30 days and the cost is reduced by 18.9%. Practice has shown that the scheme has the advantages of a simple layout,less links, complete functions, greatly reduced construction period and construction cost, and provides considerable economic benefits and good safety benefits for coal mine production.