To collect the best evidence for screening and evaluation of sarcopenia risk of gastric cancer patients at home and abroad, and to provide guidance for screening and accurate evaluation of gastric cancer sarcopenia patients.

The computer was used to search literature related to screening and evaluation of sarcopenia risk of gastric cancer patients in UpToDate, BMJ Best Clinical Practice, Australia Joanna Briggs Institute Evidence-based Health Care Centre Database, International Guide Library, China Medlive Guideline network, National Institute for Health and Clinical Excellence, Cochrane Library, Registered Nurses' Association of Ontario, PubMed, Embase, Geriatrics Branch of the Chinese Medical Association, China National Knowledge Infrastructure, Wanfang and China Biology Medicine disc. The search time was from database establishment to September 1, 2023. Literature selection and quality evaluation were conducted independently by two researchers with evidence-based knowledge training, and evidence extraction and summary were carried out for literatures meeting the requirements.

A total of 18 literatures were included, including four guidelines, five expert consensus, four systematic reviews and five diagnostic studies. The best evidence summarized included a total of 18 best evidence from 5 aspects, such as risk factors of sarcopenia in gastric cancer patients, screening time, screening content, evaluation content, diagnostic criteria and staging.

The summary of evidence provides evidence-based evidence for improving the accuracy of risk screening for gastric cancer sarcopenia patients. Medical staff can refer to the best summary of this study, combine clinical practice with the characteristics of gastric cancer patients and choose evidence reasonably.

Gastric neoplasms; Sarcopenia; Risk screening; Evaluation; Evidence-based nursing