The core idea of ERAS is to reduce trauma and stress, its aim is to promote early rehabilitation of organ function and to improve the patient prognosis and the quality of life effectively. In recent years, domestic and foreign relevant organizations and experts who explore the research of gastrectomy and ERAS have released the relevant guidelines and consensus, advocating the establishment of a standardized management team, including surgeon, anesthesiologists and nurses. On the basis of evidence-based medicine, we should respect patients' objective reality and work out individualized ERAS program. This paper focuses on the issues of controversy in the ERAS clinical practice, such as the timing of the preoperative and postoperative nutritional implementation, scheme selection and immune nutrition preparation and clinical application of ONS. Combining with the latest research progress at home and abroad that has been thoroughly analyzed and summarized, we came to the following conclusions. Preoperative nutrition assessment and nutritional therapy are important contents for improving perioperative nutrition and body function of gastric cancer patients. According to the preoperative nutrition status of the patients, the corresponding preoperative nutrition treatment plans, such as the oral administration, ONS, immunotherapy, parenteral nutrition or multi-channel combined nutrition therapy, should be selected. After operation, the patients should resume eating and drinking water as soon as possible, to minimize the occurrence of postoperative enteroplegia. For patients with no oral intake or insufficient oral intake, they can be supplemented through enteral or parenteral pathways. At the same time, this paper elaborates the treatment measures of the nutrition related issues at all stages in the ERAS of gastrectomy, aiming at promoting postoperative gastric cancer patients recover quickly and securely and providing an important basis to carry out ERAS widely in clinical practice for gastrectomy in China.