Abstract: Nowadays, with the continuous popularization of ICT network, and the rapid development of ICT technology, the importance of critical information infrastructure is increasingly highlighted. While critical information infrastructure has become the core of cyber security for all countries, it also faces increasing security risks and problems. This article focuses on cyber security drill of critical information infrastructure in Europe and the United
States, analyzes its characteristics, summarizes its practical results, and drawing on its exercise model. And this article puts forward some suggestions on the security protection of critical information infrastructure in China from the aspects of actual combat exercises, emergency coordination, technology development and personnel training.

Key words: cyber security, maneuvers, emergency coordination, personnel training