对比文学史家与历史学家的文学史研究，可以看到，对于文学和文学史研究真正作出“实绩”的，并非专门从事文学史的所谓文学史家，而多是历史学家的文学研究活动，本文分五个方面从思维方式及方法论上探究了其原因。 Compared with the literary history studies of historians and literary historians, it can be seen that literary historians did not make up the so-called literary historians who specialize in literary and literary history studies but rather literary research activities of historians. This article explores its causes from the way of thinking and methodology in five aspects.