The clinical nutrition discipline building was important to hospital development. Nutritional therapy was the foundation and important part of clinical treatment. All disease was related to nutrition metabolism, so developed nutritional intervention for homeostasis balance was important to increase treatment rate. Combined with clinical nutrition discipline building status in No.3 Tianjin Central Hospital, inview of improving clinic treatment, clinical nutrition invention system including nutritional evaluation, nutritional diag nose,parenteral nutrition,enteral nutrition, therapeutic diet, basic dietary th erapy was explored. Clinical nutrition intention system was the core of clinicalnutrition discipline and the flat of hospital development.