Abstract: In order to realize the treatment directly and uilization of the mine water in the underground mine, a pressurized type gas and water interacted flushing fi Ilter was developed suitable for the working environment in the underground mine. The filter was consisted with several closed filtration lattices. The application of the pre ssurized water income and output could ensure the income water pressure required when the filtered water was utilized for the later buildings.When some filtration lattic e needed reversed flushing, a compressed reversed air flushing would be needed first and then a reversed water flushing would be conducted.The water required for th e reversed flushing of the filtration lattice would come from filtrated water of the other filtration lattices and there would be no special flushing facilities required.Thus th e flushing efficiency could be improved and the water quantity of the reversed flushing could be reduced. The practice application showed that the filter would have the f ollowing advantages, simple in internal and external structure, small space occupied, convenient operation management, a stable operation, good output water quality a nd other features.The filter could be promoted and applied to the mine water treatment directly in underground mine.