白居易的《长恨歌》，是我国古典长篇叙事诗中流传最广，影响极深的作品之一。然而这部作品究竟表现了什么样的主题，却成了历史学者聚讼纷法的问题，迄今仍无定论。这在我国文学史上也是绝无仅有的。古代学者，有的认为该诗是“讥明皇建于色而不悟也”（唐汝询《唐诗解》）； Bai Juyi’s “Everlasting Sorrow” is one of the most widely circulated and influential works of classical Chinese narrative poetry. However, what kind of theme has been shown in this work has become a matter of lawsuit for the historians. So far, it is still inconclusive. This is also unique in the history of Chinese literature. Ancient scholars, some think that the poem is “ridiculed the emperor built in color and not enlightenment” (Tang Ruqu “Tang Poetry Solutions”);