在我国历史上的辽金时期，有一河流，名曰鸭子河。由于它曾是辽代皇帝的春猎之地，因而史书上屡见记载。又因其与研究辽金史地理的一些重大课题有涉，而倍受史家的关注。著述中，举凡及此，具体指明其为今日某河者有之，略作考究而结论其为今日某河者亦有之，更有著专文研讨者 In the history of Liao and Jin dynasties in our country, there was a river named Du Zihe. Because it was a spring hunt for the Liao Dynasty emperor, so the history books are often recorded. Due to its involvement in the study of some major issues in the geography of Liao and Jin Dynasties, much attention has been paid by historians. In the writings, there are references to this and specifically to indicate that some of them are today’s rivers. They are somewhat elegant and conclude that they are also presently owned by some rivers today.