Abstract: This paper introuduces a new desilting works mainly,the funnel total sand flushing works.This works can drain bed sediment of coarse grain and suspended sediment of fines.The desilting rate for coarse grain which diameter more than 0.5 mm is 100 percent,and for fines which grain diameter less than 0.5 mm is 90 percent,the water consum ption is only 2-3 percent of channel diversion.