Water is the most convenient pump performance test medium, so the slurry pump manufacturers are generally only to offer the water pump performance. In general, the use of liquid column height lift only associated with the motion of the liquid. The same pump fluid such as water, air, mercury on the lift generated by the numerical value is the same. When pumping slurry, as slurry concentration, the influence of the solid particle size, viscosity, etc, make the same pump transporting slurry and water head and efficiency should be changed. Compared to pump water, pumping high concentrations of coarse particle slurry, pump lift and efficiency have significantly lower; Slurry pumping fine particles, in some cases, the pump efficiency will be improved. Therefore, we on the slurry pump selection besides must know the water pump performance, to know more about pump slurry pump slurry performance and the difference between performance in water.