Objective To extract,summarize and evaluate the best evidence of nutrition management in the elderly with sarcopenia,and to provide bases for guiding nutrition in the elderly with sarcopenia. Methods We searched all evidence about nutrition management for elderly patients with sarcopenia in the UpToDate,Joanna Briggs Institution,Cochrane Library,DynaMed,National Guideline Clearinghouse,Registered Nurses Association of Ontario,Scottish Intercollegiate Guidelines Network,National Institute for Health and Care Excellence,Guidelines International Network,WHO Guidelines,CPG,Yimaitong,PubMed,Web of Science,CNKI,CBM and YIIGLE. The types of the literature include clinical decision-making,guidelines,evidence summaries,expert-consensuses and systematic reviews. The retrieval time is from the establishment of the databases to January 20,2021. Results Finally,18 articles were included in this summary,including 1 guideline,6 expert consensuses,1 clinical decision-making and 10 systematic reviews. 32 pieces of evidence were summarized in 4 categories,including nutrition screening and assessment,nutrient intake,nutrition monitoring and health education. Conclusion Nutrition management can effectively improve sarcopenia. The evidence summary process of this study is scientific,rigorous and comprehensive. Clinical staff should select the best evidence according to the specific situation and individual factors of patients in the process of evidence transformation,so as to guide the elderly patients with sarcopenia to safely and effectively improve their nutritional status and quality of life.