Abstract: Objective To study the detection status and related factors of anemia among primary and middle school students in Baise City, so as to provide scientific basis for reducing the prevalence of anemia among primary and middle school students in Baise City. Methods From January to March 2021, a junior high school and a primary school in each of the 12 counties and districts of Baise City were selected by random cluster sampling method. All the students were investigated by questionnaire, physical examination and blood biochemical index tests. The content of hemoglobin was detected for anemia screening. The current situation of anemia among primary and middle school students in Baise City was analyzed by descriptive epidemiological analysis method, and univariate and multivariate analysis methods were used to analyze the influencing factors of anemia. Results A total of 30 248 primary and middle school students were included in this study, of which 4 295 cases of anemia were detected, and the prevalence rate of anemia was 14.20%, including 3 124 cases, 1 063 cases and 108 cases of mild, moderate and severe anemia, accounting for 72.74%, 24.75% and 2.51% respectively. There were significant differences in the prevalence of anemia among primary and middle school students in Baise City with different body mass index, mother's educational background, anemia history, dietary status and physical exercise （all P< 0.01）. Multivariate Logistic regression analysis showed that lean body mass index （OR=1.933） and anemia history （OR=2.282） were risk factors for anemia in primary and middle school students in Baise City. The higher the mother's education （OR=0.828, 0.662）, healthy diet （OR=0.670）, physical exercise up to standard （OR=0.592） were protective factors for anemia in primary and middle school students in Baise City. Conclusion The anemia status of primary and middle school students in Baise City is not optimistic, affected by many factors, effective intervention measures should be taken to strengthen scientific nutrition and diet management, promote primary and middle school students to enhance their physique, reduce the prevalence of anemia and improve their health level.

Key words: Anemia, Middle school students, Primary school students, Hemoglobin, Related factors