Working Memory (WM) is an essential concept of cognitive science since many aspects of human learning depend on it. Primarily proposed by Baddeley and Hitch (1974) and developed by Baddeley (1986), the concept of WM comprises the number of subsystems involved during the process and the considerable emphasis on its key role in cognitive tasks such as learning, reasoning, and comprehension. As a complex and limited cognitive system, by enabling the input to be temporarily stored, monitored and manipulated understanding the sub mechanism under the WM model is crucial in specifying the factors that affect learning languages. By taking Baddeley's model of WM (2012) as reference, the aim of this study is to discuss the model of WM and demonstrate the relationship between its components and the processes that play an important role in understanding the underlying cognitive processes for language learning.