Abstract: In a digital era, an increasing number of emerging Internet platform companies have risen rapidly, profoundly changing the way the economy and society operate. While the platform economy is booming, governance concerns regarding platform competition and monopoly are increasing, calling researchers to re-examine the issue of anti-monopoly, which relates to various aspects such as fair market competition, enterprise innovation, and social public interests. In this paper, we conduct a bibliometric analysis of papers which research anti-monopoly issues from database in Web of Science and CNKI. Research history, current situation and trends of anti-monopoly issues are identified by descriptive statistics, keyword co-occurrence analysis and co-citation network analysis and other bibliometric methods. The results indicate that:(1) Domestic and foreign scholars mainly from economics and law have conducted comprehensive research on anti-monopoly. Among which, research from developed countries in Europe and the United States is prevailing, meanwhile, domestic research develops rapidly. (2) Early research focuses on the anti-monopoly impact at the macro level such as laws, industries, and policies. Afterwards, monopoly behaviors and antitrust cases have been further studied. Moreover, new research focuses such as bilateral market theory, market dominance, digital economy, and platform economy have emerged in recent years. (3) Difficulties and challenges still exist in anti-monopoly research. In the digital era, business model innovation keeps a fast speed, and artificial intelligence technologies make monopolistic behaviors difficult to identify, define, and analyze. There is also a gap between academic research and policy regime. This paper proposes a future research agenda and the promising research area, such as big data and anti-monopoly, related market definition, platform supervision, and competition policy design.

Key words: antitrust, bibliometrics, keyword networks, citation networks