Abstract: This article introduces the background knowledge of extraordinary environmental mechanics and reviews the frontier progress in the field of extreme mechanics that was reported on the Chinese Journal of Theoretical and Applied Mechanics (CJTAM) symposium. This article focuses on research directions that are critical for the national security, such as the deep sea, deep space and high temperature and hypersonic flow, and introduces the significant achievements and the latest research progress in the field of extraordinary environmental mechanics. Through this conference, the editorial department of CJTAM is exploring a new communication mode, which can timely convey the cutting-edge and groundbreaking achievements to researchers, thus supporting the research and development in related engineering and technology fields. This article also summarizes the research fields involved in the symposium, hoping to promote research and communication within the field of extraordinary environmental mechanics.