This book analyzes the governance of illegal immigrants in ethnic areas along China’s southwest border. Since China is not an immigrant country and lacks an immigrant culture, the goals of law enforcement departments are limited to sanfeirenyuan (three types of illegal persons: illegal immigrants, illegal residents, and illegal employees). The transformation of sanfeirenyuan, an issue that has plagued China for many years, into an “illegal immigration” governance issue that is of general concern to the international community, has led to fundamental changes in research methods and research topics. The research presented here makes the issue China now faces part of global issues; by using the “worldview on China’s issues” to assess current problems, it can also show how “China’s solutions can be applied to global issues.” The unique feature of this book is that it approaches the issue of illegal immigration as an unconscious crisis. Accordingly, it holds substantial value in terms of exploring the theoretical basis of and governance methods for maintaining national security in the context of globalization, as well as the early warning mechanisms and crisis management in the context of China’s national security. Since China has a long southwest border, the stability and security of border ethnic areas have long played a decisive role in the stability and security of the country as a whole: if the frontiers are stable, the country enjoys enhanced security. Consequently, investigating the governance mechanism for illegal immigrants in the ethnic areas of the southwest border is of considerable practical relevance. This book offers a valuable asset for researchers in related fields and can be used as a reference book for students of national security. It also benefits practitioners in relevant management departments.