围绕当前黄河河口入海流路未来能否永久固定这一热点问题，系统总结了现行清水沟流路行河历时长达40 a的原因。从河口来水来沙、径流及海洋动力输沙能力、人工干预措施三个方面详细分析了黄河河口入海流路永久固定的可能性，指出了未来永久固定河口流路可能给黄河下游防洪安全带来的重大隐患，明确了未来河口综合治理的主要目的仍在于防洪减灾，同时要兼顾生态环境保护和入海水沙资源的开发利用，而非固定河口流路。%The paper systematically summarized the reasons for 40 years use of the exiting Qingshuigou flow path, focusing on the hot issue of whether or not the Yellow River seawards flow path should be fixed. Possibilities of permanent fixation of the channel were discussed from three aspects of flow and sediment conditions, runoff and sediment transporting capability of ocean dynamic in a detailed way. Potential severe problems were put forward that permanent fixation of the channel in the future probably brought out for the flood control in the lower Yellow River. It was indicated that main object of the estuary comprehensive regulation was still flood control and disaster reduction, meanwhile taking into account environment protection and utilization of incoming flow and sediment resources, not the channel fixation.
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