Based on a systematic review and evaluation of the study of context in the field of systemic functional linguistics,a theoretical framework of context that includes micro,meso and macro contexts is formulated.Next,the choice of address terms is then investigated,by taking a dialogue of characters in the TV drama of In the Name of the People as an example.This study holds that contextual variables influence the choice of address terms in a holistic and collaborative manner.Specifically,as the interaction unfolds,communicative intention alternately regulates the power relationship and the degree of closeness or distance between participants,resulting in the transient change of their relationship,thus influencing the choice of address terms.Meanwhile,meso and macro contexts promote the transient change of interpersonal relationship and strengthen the communica-tive intention respectively,ultimately influencing the choice of address terms.Through this study,the applicability of the new framework of context has been verified in conversations,and the interaction between contextual variables has been suggested.