Wulongxuan is one of the rapids which are famous for dangerous torrent in the Yellow River during the mid and high level.Due to the alluvial accumulation at the right outlet,which narrows the bed’s transverse section and the current turns swift.The downstream deep trough absorbs strongly the water flow,and that results in the huge wave height,strong scroll，severe flow pattern and serious obstruction to navigation.So， the measure which combines spit cutting with trough filling is taken to expand the discharge cross-section,reduce the flow velocity and gradient,decrease the river’s longitudinal slope,weaken the scroll,and improve the navigation condition to satisfy the standard of grade V channel which is particularly important and necessary.The experimental result reveals that by the scheme which combines spit cutting with trough filling,the flow velocity and gradient of the river section decrease,the scroll and oblique flow weakens,the flow pattern and navigation condition improve obviously.So,the scheme can be taken as the recommended scheme for Wulongxuan rapids.