Objective: To analyze the policy and guideline, the institutional management and the operation mechanism of ICU medical risk management in the United Kingdom, the United States, Australia, Canada and Taiwan, so as to provide evidence and recommendations for health care risk management policy in China. Methods: Such databases as PubMed, EMBASE, The Cochrane Library were searched to include the literatures such as the guideline documents and the research reports on ICU medical risk management in the United Kingdom, the United States, Australia, Canada and Taiwan; the institutional management and the operation mechanism of the risk management in the above four countries and one area were comprehensively analyzed, and especially the UK model was highly emphasized. Results: A total of 31 literatures were included, including 1 guideline, 5 reviews, 2 investigative reports and 23 research documents. The United Kingdom guided the ICU risk management in forms of the standard and the guideline, formulated a clear tool of event classification and corresponding response mechanism. The United States learned from Australia's experience and established the ICU safety reporting system; both of them regarded ICU as one part of the medical risk management and set up a special management column. Conclusion: The ICU risk management with the independent report system in the United Kingdom is brought into the scope of national patient safety management, and is regarded as the relative complete system at present. In Australia and the USA, the national institutions are in charge of setting up the research projects of ICU risk management; the industry associations and the non-governmental organizations lead the risk research; and the experimental units popularize gradually after self-application. © 2011 Editorial Board of Chin J Evid-based Med.