Abstract: Nutritional therapy is one of the most important treatment measures for surgical critically ill patients, and it is also a difficult point in clinical nutritional support practice. In recent years, nutritional support treatment for surgical critically ill patients has achieved rapid development both in theory and practice. Many large-scale, multi-center clinical studies have been completed worldwide. Consensus has been formed on many hot issues and relevant guidelines have been issued. Based on the latest evidence-based medicine achievements, the author summarizes and interprets the hot and controversial issues of nutritional therapy for surgical critically ill patients in recent years.