The water sump of coal mine needs to be cleaned frequently. It takes time and effort. In order to improve cleaning efficiency, at the same time, considering the coal mine ground transportation, Xinjing mine was taken as an example, the MQC - 75 multi-function clearance machine application in coal mine water sump cleaning was analyzed, the design of the clearance machine parameters, structure layout, operation principle and actual application effect were introduce, providing the corresponding reference for the application of similar equipment in mines.