This paper aims to elucidate the dynamic functions of the grammatical person shift in Hosea. Although linguistics has advanced the understanding of the person shift these years, the research of person shift in biblical Hebrew according to its discourse and rhetoric functions is still in need (few studies have probed this phenomenon as a subordinate function, such as Wendland, 1995, L. J. de Regt, 2000 and 2001). Therefore, besides the referential function of the grammatical persons, this study mainly focuses on their non-referential functions in Hosea, such as topicality, emphasis, climax, and other interlocutors’ perspectives. All these functions demonstrate that person shift is a powerful tool to fulfill Hosea’s communicative goal. The first part of the paper briefly surveys the research of person shift in both biblical study and linguistics with methodological considerations. The main body focuses on the specific cases in the book of Hosea, covering subsections such as From the Third Person to the Second Person (topicality, emphasis, climax, and covenantal proximity), From the Second Plural to the Second Singular (specification), and From the Second Person to Third person (social-relational distality and solemnity). Appreciating Hosea’s person index (markers) more dynamically and independently than the previous studies that treat it subordinately, the paper helps better understand the prophet’s persuasive artistry of person shift and explains some difficult passages (such as Hos 5:2; 8:1) that are thought textual corrupted.