Drilling style pumping sand pump performance in the absorption process refers to the anti cavitation characteristics under the condition of room temperature water pump. Sand mining in sediment pumping operations should as far as possible so that the pump inlet pressure for positive pressure. Sediment containing larger solids when the pump flow head will be affected, the selection of the media to consider the situation. Dredger mud pump is fixed at the work site, should first check the prime mover shaft and the pump shaft is in the same axis, if different shaft should be that for accurate adjustment.