Based on the analysis of the effects of drain-pipe on the channel slope stability,this paper puts forward a new drainage structure,i.e. horizontal drain-pipe.The result of the experiment on the horizontal drain-pipe implemented under the complicated geologic condition in a revetment engineering in Douhudi channel reveals that the horizontal drain-pipe can eliminate the underground water and seepage,so as to weaken the damage on the slope’s stability.The deep horizontal drain-pipe technology was applied to the Yangtze River channel regulation engineering for the first time and achieved a good engineering effect,so it may serve as reference for similar projects.