Cancer patients are more prone to malnutrition and the proportion of malnutrition is higher. During hospitalization medical staff can provide reasonable nutritional treatment based on the patient′s condition to improve their condition. However most cancer patients spend more time at home rather than in the hospital. Therefore nutritional treatment for home cancer patients is equally important. All home cancer patients need to undergo nutritional risk screening and assessment by professional healthcare professionals or nutritionists to determine whether home nutrition treatment is necessary. When it is not possible to meet the needs of home cancer patients through food and oral nutrition supplementation the implementation of home enteral and / or parenteral nutrition should be considered. Home parenteral nutrition requires the establishment of a parenteral nutrition preparation room strictly following sterile operating techniques and preparation processes and preparing parenteral nutrition preparations under the guidance of professionals. Fat emulsion can reduce the inflammatory response of long - term parenteral nutrition treatment and improve the prognosis of patients. Patients who receive long-term home parenteral nutrition treatment should supplement with glutamine in moderation.