由于水利水保工程和气候因素的双重作用 ,使得近年来黄河中游地区入黄水沙锐减 ,虽然减沙有利于黄河下游河道减淤 ,但减水特别是含沙量较小区的减水使黄河下游河道淤积量增加并逐步细化 ,且使下游断流现象加剧。本文经分析指出 ,多沙粗沙区必须加速治理 ,少沙清水区和黄河下游要节约用水 ,才有可能缓解黄河下游的断流和中常洪水高水位等问题 Due to the double functions of water conservancy and water conservancy projects and climate factors, the sediment inflow into the Yellow River in the middle reaches of the Yellow River has dropped sharply in recent years. Although sediment reduction is beneficial to the reduction of silt in the lower Yellow River, water reductions, especially in areas with lower sediment concentrations, So that the sedimentation in the lower reaches of the Yellow River increased and gradually refined, and the downstream cut-off phenomenon intensified. This paper points out that it is necessary to speed up the management of sandy and sandy areas and to save water in the lower reaches of the Shahe River and the lower reaches of the Yellow River so as to alleviate the problems of the flow-cutting in the lower reaches of the Yellow River and the high water level of the middle-level floods