Working memory consists of four components;Central Executive System,Visualspatial Sketchpad, Phonological loop and Episodic buffer,each of which has specific functions.Comprehension in interpretation is a nonlinear cognitive activity which contains both top-down and bottom-up processes.During these processes,long-term memory and working memory play significant roles.From a static perspective,long-term memory,storing all types of knowledge closely related to comprehension in interpretation,becomes the prerequisite and basis of comprehension and renders the execution of working memory possible.From a dynamic perspective,each of the four components of working memory plays a special and critical role in the process of interpretation comprehension.