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 patients from the perspective of hospital.