Abstract: Using CNKI 2361 and WOS 5036 literatures as data sources, the knowledge map of "energy security" was constructed with the help of CiteSpace. The evolution, research hotspots and frontier trends of energy security research at home and abroad from 1992 to 2020 are compared and analyzed. The results show that energy security research has experienced three stages: initial germination, rapid development, coexistence of continuous development and volatility. There is no core group of authors at home and abroad, but obviously research teams have been formed. There is stable cooperation within the teams, but the cooperation between different teams needs to be strengthened. There are obvious differences in research content, research hotspots, and research frontiers between domestic and foreign research on energy security. Foreign research focuses on energy security issues in developed countries, the construction of energy security concepts and evaluation index systems, focusing on energy strategies, economic growth, energy reserves, and response to climate challenges and optimization adjustments, while domestic research focuses on China's status and role in the world structure, as well as climate change and other coping strategies, advocates global cooperation and common governance, and pays attention to the issues of "The Belt and Road, Global Energy Governance, and Energy Revolution".