本文在总结前人成果的基础上，进一步分析了长江冲淡水输运和扩散的途径。文章指出，长江冲淡水输运和扩散的途径有两种：顺岸南下型在冬、夏季都存在，它主要以杭州湾的次级锋面流和沿岸锋密度流为代表；转向型从５～６月开始，台湾暖流低密水和东海高密水之间的密度锋是长江冲淡水向外海扩散的通道 Based on the summary of previous achievements, this paper further analyzes the ways of transporting and diffusing the Yangtze River's freshwater. The article points out that there are two ways to transport and diffuse the Yangtze River's fresh water: the south-facing type of the coast runs in both winter and summer, which is mainly represented by the secondary frontal flow and the coastal frontal density flow in Hangzhou Bay; Beginning in June, the density front between Taiwan's warm low-density water and the densely populated East China Sea is the channel through which the Yangtze River's freshwater spreads to the sea