Gastric cancer ranks fifth in global incidence and fourth in mortality with high incidence and poor prognosis. The incidence of malnutrition in patients with gastric cancer is high and it exists for a long time after surgery and the recovery cycle is long. Nutritional treatment is still needed after discharge. Good treatment compliance is the key to nutritional therapy but the current status of out-of-hospital nutritional therapy compliance of patients with gastric cancer after surgery is not optimistic and the effect of nutritional therapy is not good. At the same time there is a lack of standard evaluation tools for the assessment of nutritional treatment compliance of patients discharged after surgery resulting in a relatively low level of relevant studies which are often only studied as secondary indicators. However it can be confirmed that the patient ' s age knowledge level dietary preference postoperative complications socioeconomic factors health education and follow-up guidance of medical staff will affect the compliance of patients with out-of-hospital nutrition therapy. Therefore this paper summarized the current status and evaluation tools of out-of-hospital nutritional treatment compliance of postoperative patients with gastric cancer analyzed the influencing factors of post - discharge patients' nutritional treatment compliance from multiple perspectives and discussed the methods to improve patients' out-of-hospital nutritional treatment compliance. In order to provide reference for patients to develop personalized nutritional treatment plan enhance the viscosity of out-of-hospital nutritional treatment and improve the nutritional status of patie nts from the perspective of hospital.