This article explores the basic concept, analytical framework and theoretical implications of international political communication with the goal of streamlining the sophisticated tasks involved in international communication and related foreign affairs. To start with, this author refers to and revises Richard Merritt's value transmission system so as to establish an analytical framework that can meet the pragmatic requirements of modern international communication. Next, the author borrows the concept of social constructivism in IR and Jürgen Habermas's communicative action theory to understand their deeper implications for international communication in global civil society. Lastly, the author takes Taiwan's participation in the UN's specialized agencies as an example to investigate the possibility of pragmatic application of the analytical framework of international political communication, and hopefully to reveal a different way of thinking about Taiwan's participation in international society.