Objectives To retrieve,evaluate and summarize the best evidence for preventing and management of intra-abdominal hypertension in critically ill patients to provide evidence for clinical nurses to prevent and monitor the intra-abdominal hypertension in critically ill patients. Methods We searched websites and databases including,but not limited to,UpToDate,BMJ Best Practice,National Institute for Health and Clinical Excellence,Guidelines International Network,Registered Nurses Association of Ontario,Scottish Intercollegiate Guidelines Network,World Health Organization,Yimaitong guide network,World Society of the Abdominal Compartment Syndrome ( WSACS ),Cochrane library,PubMed,Embase ( OVID ),CINAHL ( EBSCO ),CNKI,Wanfang for guidelines,recommended practices,evidence summaries,expert consensuses,and systematic reviews,randomized controlled trials,best practice information manuals regarding monitoring and management of intra-abdominal hypertension in critically ill patients were searched and retrieved. 2 researchers independently assessed methodological quality of included papers and extracted data. Results A total of 15 articles were included,including 5 guidelines,1 expert recommendation,2 expert consensuses,1 best recommendation,6 systematic reviews. Finally,21 pieces of best evidence were formed from 6 aspects,namely the assessment,monitoring management,treatment management,posture management,enteral nutrition management,volume resuscitation and fluid management. Conclusion The best evidence for prevention and management of intra-abdominal hypertension in critically ill patients summarized in this study is scientific and comprehensive,providing the evidence-based basis for medical staff to standardized measurement and management of intra-abdominal hypertension in critically ill patients in clinical practice.