Objective To understand the nutritional literacy level and associated factors of primary and secondary school students in Beijing,so as to provide a scientific basis for improving student nutrition.Methods From October 2022 to May 2023,a multi-stage cluster random sampling method was employed to select a total of 14 568 primary,junior and senior high school students from 16 districts(ecluding the Economic-Technological Development area)in Beijing.Through a survey questionnaire on nutritional literacy and dietary hehavior of school-age children,basic information as well as data on nutritional literacy levels across four dimensions:nutrition related knowledge concepts,food selection,food preparation,and food intake dimensions were obtained.The Wilcoxon rank sum test,Kruskal-Wallis test,Spearman correlation analysis,Chi-square test and binary Logistic regression were used for the analysis.Results The median total score of nutritional literacy among primary and secondary school students in Beijing was 68.8.Approximately 26.0%of primary and secondary school students achieved nutritional literacy standards.The medi-an scores and rates of meeting the standards for nutrition related knowledge concepts,food selection,food preparation and food in-take dimensions were 23.0,42.1%;17.0,27.4%;6.5,33.5%;23.0,33.3%,respectively.There were positive correlations be-tween all pairs of the four dimensions(r=0.33-0.49,P<0.05).The results of multiple Logistic regression analysis showed that pri-mary school students,junior high school students,female students,suburban students,caregivers with a college education level and a bachelor's degree or above were the positive arrelation factors that promoted the achievement of nutritional literacy standards(OR=2.21,1.39,1.18,1.27,1.42,1.66,P<0.05).Conclusion The literacy level of primary and secondary school students in Beijing needs to be significantly improved.School stage,gender,region and caregiver's education level are associated factors.