本文分析了三门峡水库控制运用以来渭河下游河道的冲淤变化,初步认为:1.只要严格控制水库蓄水位,潼关侵蚀基准面高程是可以稳定在326～327m的;2.渭河下游经过自动调整,河道的泄流输沙能力有较大的恢复,河道形态接近建库前水平;3.河口拦门沙淤塞问题仍然是渭河能否平衡的关键。此外,还对渭河下游治理提出了一些意见。 This paper analyzes the scouring and depositional changes in the lower reaches of the Weihe River since the Sanmenxia Reservoir was controlled and controlled. It is preliminarily considered that: 1. The elevation of the Tongguan erosion baseline can be stabilized at 326 ~ 327m as long as the reservoir water level is strictly controlled; 2. The lower reaches of the Weihe River are automatically adjusted , River discharge and sediment transport capacity has been greatly restored, the river shape close to the level before the reservoir; 3. Stagnant barriers to the estuary is still the key to balance the Weihe River. In addition, some opinions on the harnessing of the Weihe River have also been put forward.