Objective To summarize the assessment of the premature gastric retention and deal with the best evidence, which can be used as reference for the clinical nursing methods of computer retrieval evidence-based resource and literature database at home and abroad about premature gastric retention in the assessment and treatment guidelines summarize evidence expert consensus system evaluation of evidence, and the retrieval time for libraries to July 15, 2019 by the three researchers to evaluate the retrieved literature and information extraction, the evidence of the literature of quality standard extraction results were incorporated into three articles, including 2 guide 1 expert consensus, for obtaining the best evidence and summarized six recommendations for three aspects, respectively to the evaluation of the gastric retention time gastric retention of the color of the evaluation of gastric retention processing conclusion medical personnel can according to the actual circumstance of the ward, choosing the appropriate evidence is applied in clinical, promote premature evaluation of gastric retention and deal with the specification of the formation, reduce premature complications, promote the development of the nervous system in the body growth and quality, shorten the average such confinement.