This article is aimed at exploring the basic concept, analytical framework and theoretical implications of international political communication. To start with, this article revises Richard Merritt's value transmission system to establish an analytical framework that can meet the conditions of modern international communication. Next, it borrows the social constructivism in IR and the communicative action theory of Jurgen Habermas to endow international political communication with more theoretical implications. Lastly, this article takes Taiwan's participation in the UN specialized agencies as an example to investigate the feasibility of applying this conceptual framework of international political communication.