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Background:The patients after hemodialysis may be caused malnutrition for decreased nutrition intake, nutrition loss during the hemodialysis, consumption caused by the disease, metabolic disorder and endocrine disorder etc. Malnutrition may caused lowered immunological function, long terms of anemia and hypoproteinemia may cause malnutrition of the cardiac muscle, lower cardiac function and risk heart failure. Malnutrition may also harm appetite and cause the malnutrition worse. Malnutrition caused insufficient vigor in the patients and affect their daily living abilities directly. So to regulate the nutrition level scientifically is important for ameliorating nutrition condition of the patients and to increase their daily living abilities.