Objective To investigate the incidences of nutrition risks, malnutrition ( undernutrition),overweight, and obesity, and nutrition support in tertiary hospitals in Xinjiang Uigur Autonomous Region. Methods Using fixed-point consecutive sampling, we collected the clinical data of inpatients in 6 departments of five tertiary hospitals in Xinjiang. According to the Nutrition Risk Screening 2002 (NRS 2002 ) published by European Society for Parenteral and Enteral Nutrition, patients were graded as at nutritional risk when their NRS 2002 scores ≥3 and as malnutrition when the body mass index (BMI) was ＜ 18.5 kg/m2 (or albumin ＜ 30 g/L). NRS 2002 screening was performed on the next morning after a patient was admitted. The nutrition supports within 2 weeks after admission were also investigated. The relationship between nutrition risks and nutrition support was analyzed.Results A total of 4036 inpatients were investigated, among them 3913 patients received NRS 2002 screening.The malnutrition (undernutrition) rate and the proportion of patients at nutritional risk were 8.4% and 34. 2%, respectively. The percentage of nutrition support was 10. 2%, which included parenteral nutrition (8. 5% ) and ena simple, fast and convenient tool for the investigation of nutrition risks and can provide a basis for reasonable nutrition support Therefore, it should be widely applied in clinical practice.