In view of the long-distance water control problem of the auxiliary coal transportation roadway of the left wing of the southern section of the Mugua Mine, the drainage system scheme was formulated based on the actual supply and drainage routes of the working face, and the design of the pump was selected. The final pump was selected as BQS50-150-55. The φ108 mm×4 mm steel pipe was selected for the drainage pipeline, and the water pump and pipeline were verified to meet the production requirements.