Although it was often to hear that malnutrition ratio in Aisa hospitalized patient was 40%-70% , there was no evidence to elaborate the prevalence of nutritional risk and malnutrition on hospitalized patients of Asia. Also in USA no data for nutritional risk. In 2002, scientists group headed by Kondrup from : European Society for Parenteral and Enteral Nutrition demonstrated that randomized controlled clinical trials showed patients may get benefit from nutrition support when they with nutrition risk. Based on these evidences, a simpler method was established by European Society for Parenteral and Enteral Nutrition in year 2002 in Munich & it was demonstrated useful to evaluate the appropriate use of nutrition support at present time. This method was named as Nutrition Risk Screening (NRS).