Abstract: The 1QY-0.9 type hanging silt cleaner in irrigation ditches was developed in order to realize the mechanization of clearing ditches with forest defence. It scoops up silt through excavating shovel, and feeds the silt into the part of sling silt along the axial direction, then the impellers in the part of sling silt throw up the silt to the top of the ditches along the parabola pathway. The result of the experimentation shows that the variance coefficient of the average clearance deepness is 12.20%～13.80%, the variance coefficient of the distance of sling silt is 21.50%～32.70%, when the distance of sling silt is 11.75～4.90 m, the productivity is 123.75～210.88 m³·h^-1. Every technique index of the 1QY-0.9 type cleaner is up to par. The performance levels and work dependability are better. In contrast with traditional cleaner, it can work in the ditches and without being influenced by forest defence, besides, its flexibility is excellent and the work quality reaches entirely the need of clearing ditches in the irrigation area along the Yellow River.