Routledge published The Routledge Handbook of Critical Discourse Studies compiled by John Flowerdew and John E. Richardson in 2018 on the occasion of the 40th anniversary of the birth of the critical approach to discourse studies. This paper summarizes the content of the handbook and comments on its contributions and features. The handbook provides a comprehensive introduction to the main theories, key concepts and applications of critical discourse studies and describes the latest developments and tendencies of the main approaches, methods, issues and theoretical applications of critical discourse studies. As an important representative work in the field of critical discourse studies, the handbook manifests a newly expanded and integrated theoretical vision and the enriched and updated analytical methods, and demonstrates the characteristics of critical thinking, illuminating leading, systematic review and valuable guidance. The book is of great value and sheds light on the research into critical discourse studies at home.