Abstract:Malnutrition is an independent risk factor for predicting mortality in surgical patients and one of the main negative factors affecting clinical outcomes. As a pioneer in clinical nutrition support in China，Academician Li Jieshou has been committed to investigating the application value of nutritional support therapy during the perioperative period of surgery，and introduced enhanced recovery after surgery（ERAS）concept to China in 2007，underscoring the critical role of nutrition support in reducing postoperative complications and promoting patient recovery. As early as more than 2 000 years ago，the ancient text“Huangdi Neijing”noted that“man relies on stomach qi as the foundation”and“those who gain grains thrive，while those who lose grains perish”，emphasizing the importance of the“spleen and stomach”.Similarly，the“Treatise on the Spleen and Stomach”asserted that“the optimal treatment lies in harmonizing the spleen and stomach”. Despite differing theoretical foundations，both Chinese medicine and Western medicine agree on the central role of the“spleen and stomach”in human health and recovery. The purpose of this article is to explore the mechanisms of ERAS to reduce postoperative complications from the perspective of“spleen and stomach”，providing new insights for the construction of ERAS concept of integrated Chinese medicine and Western medicine.