Yellow River is a river with a large amount of sands in water.The water divevced from it has a great deal of sands and muds.The sand sinking pool can effectively treat muds and sands in water due to its function of sinking coarse sands and draining silt.When sand sinking pools are full and lose efficacy,the method of "digging out sands to wait for deposition" can increase the life of irrigation region.But this method is not as good as that of "pumping up water to sink sands".Considering that the lower reach of Yellow River is an aboveground river,the problem of cultivated land occupation by deposited sands may probably be solved by the foundation of sand sinking pools on the high flood land of Yellow River channel.