Adopting the cartographic approach, this paper proposes syntactic positions for all left-periphery particles above the tense phrase (TP) in Cantonese. These include both sentence-final particles and sentence-initial particles that can be used in isolation as interjections. Based on previous syntactic proposals for the left periphery, a modification of Rizzi’s (2001) split-complementizer phrase (Split-CP) structure is proposed. A Deictic Phrase (DeicP) is added above the finite phrase (FinP) for the Cantonese “tense” particles