Objective To evaluate and summarize the relevant evidence of early enteral nutrition in patients with severe acute pancreatitis (SAP), and provide evidence-based support for the clinical practice of early enteral nutrition in SAP patients. Methods The evidence on early enteral nutrition in SAP patients from relevant databases and websites was retrieved using computer. The retrieval deadline was from the establishment of the databases to December 31, 2024. Two researchers independently conducted literature screening and quality evaluation, extracted and summarized evidence. Results A total of 14 articles were included, including 6 systematic reviews, 7 guidelines, and 1 expert consensus. A total of 19 pieces of evidence were compiled and summarized from 9 aspects, including early enteral nutrition feeding assessment, start timing, feeding route, catheterization method, infusion method and speed, energy and protein targets, nutrient preparation selection, complication prevention and management, and health education. Conclusion The overall quality of evidence for early enteral nutrition in SAP patients is good and has strong generalizability. Medical staff should select evidence based on clinical contexts and develop safe, scientific, and personalized enteral nutrition plans for patients to promote their recovery.