The theories in Aristotle’s Poetics are the earliest and the basis of western principal aesthetic notions.This article generally analyzed a very important aesthetic thinking of Aristotle in this work——the notion of organic holism.The significance of this notion to literary theories is also included. The theories in Aristotle’s Poetics are the earliest and the basis of western principal aesthetic notions.This article generally analyzed a very important aesthetic thinking of Aristotle in this work - the notion of organic holism. The significance of this notion to literary theories is also included. .