Abstract: Objective To analyze the dynamic change of nutritional status among Han students aged 7-18 in Urumqi over the last 30 years,and to provide basis for relevant nutrition intervention policy.Methods Data came from 6 consecutive surveys in Urumqi,which was part of Chinese National Surveillance on Student's Health and Physical Fitness from 1985 to 2014.Screening Standard for Malnutrition of School-age Children and Adolescents (2014) was used to assess growth retardation and stunting,while WGOC-BMI was used to screen overweight and obesity.Results Detection rate of stunting,growth retardation and malnutrition decreased greatly from 1985 to 2014,from 32.8%,26.1%,30.6%,and 24.0% in 1985 to 5.2%,8.2%,8.8%,and 9.7% in 2014 for urban boys and girls,rural boys and girls,respectively.The decrease was relatively greater in rural students than in urban students.The detection rate of overweight obesity and over-nutrition increased greatly from 0.7%,1.0%,0.8%,and 0.8% in 1985 to 42.2%,23.2%,31.2%,and 17.5% in 2014 for urban boys and girls,rural boys and girls,respectively.The increasement was higher in boys than in girls.Significant increase of over-nutrition was noticed among primary school students in urban area of Urumqi.Conclusion Nutritional status among students in Urumqi has been greatly improved during the last 3 decades,which is consistent with the national trend.The comorbid phenomenon in malnutrition and over-nutrition increase among rural areas should take further notice.Attention should also be paid on over-nutrition prevalence in urban areas.