曾为太湖的主要泄水入海通道的今黄浦江支流吴淞江 ,当有元一代 ,曾经进行过规模相当、持续不断的“治理”。通过对相关资料的重新考察 ,得出以下结论 :一、由于时人的“肆意妄为”,入元以后的十数年间 ,原本“安流”的吴淞江水系遭到了严重的破坏 ,从而开始了难以“恢复”的不可逆转。二、至元末的淀山湖工程、大德末的吴淞江工程以及泰定、至顺、至正中的工程 ,都不是“有效”的水利工程 ,究其原因 ,一是没有从整体的利害关系考虑 ,二是有违当时已经形成的“自然”态势 ,那就是太湖水流宣氵曳日益向南的“必然”演化。三、关于南宋吴淞江的干流 ,并不如许多研究者所言即明代的“虬江”、今天的西虬江。准确的表述应是 :当时的吴淞江河床包含今吴淞江南岸到虬江北岸间的整个区域。“虬江”亦是“旧江”,不过是由于河床垫高、水流分岔后的一股北去水道的遗迹而已 Formerly the Wusong River, a tributary of the Huangpu River, where the Taihu Lake was mainly discharged into the sea, there was a generation of “Yuan Shui” who had conducted considerable and continuous “governance”. Through the reexamination of relevant materials, the following conclusions can be drawn: First, due to the “wanton behavior” of the people, the water system of the Wusong River, which was originally “Anliu”, was severely damaged in the ten years after entering the Yuan Dynasty, Difficult to “recover” irreversible. Second, the Dianshan Lake Project to the end of the Yuan Dynasty, the Wusong River project at the end of the Dadu Prefecture, and the works to Taizheng, Zhishun and Zhengzhong are not “effective” watercourses. The reason is that they are not considered from the overall interest Second, contrary to the “natural” situation that had already formed at the time, that was the “inevitable” evolution of the Taihu Lake’s propaganda increasingly southward. Third, about the main stream of the Southern Song Dynasty Wusong River, not as many researchers said that the Ming Dynasty “Qiu River” today’s Xijiang River. Accurate representation should be: at that time the Wusong River bed contains the entire area between the south bank of the Wusong River and the north bank of the Yong River. “Han River” is also the “Old River”, but it is due to the river bed paddock, a bifurcation of water after the northern dive just