Poetry is one of the essence of Chinese literature and poetry translation is the most complicated and controversial one in literary translation. Under the theoretical framework of Halliday's systemic functional grammar, this article analyzes the selected versions of English translation of the Chinese poem QingMing. We focus especially on interpersonal metafunction and find that mood and communicative role have interpersonal significance. This study examines the applicability of the systemic functional linguistics in poetry translation analysis and puts forward some suggestions on poetry translation.