Abstract: Objective To investigate the status of abnormal uterine bleeding in female college students and determine its influencing factors, so as to provide scientific basis for reproductive health education in colleges and universities. Method sFemale students were selected by using a stratified cluster sampling method from three vocational schools in Zhaoqing City to conduct a questionnaire survey. The survey included basic information of the respondents, frequency of high-calorie food intake, eating habits, exercise and sleep, and menstruation in the past 6 months. The factors affecting metrorrhagia were analyzed by univariate and multivariate logistic regressions. Results A total of 1 261 female students from three vocational colleges in Zhaoqing City were investigated, including 514 （40.8%） freshmen, 538 （42.7%） sophomores, and 209 （16.6%） juniors. Of the participants, the families of 708 （56.1%） students were in the urban area city, the monthly living expenses of 1 026 （81.4%） were mainly 500-1 499 Yuan, and BMIs of 693 （55.0%） were mainly 18.5-23.9. The prevalence of abnormal uterine bleeding in the respondents was 45.84%. Multivariate logistic regression analysis showed that the female students whose families were located in rural area （OR=1.296）, BMI<18.5 （OR=1.591）, drinking sugary beverage regularly （OR=1.553）, and having weight loss behavior （OR=1.629） had a higher risk of abnormal uterine bleeding, while those who walked regularly had a lower risk （OR=0.648）. Conclusion The incidence of metrorrhagia was high in female college students in Zhaoqing. Regular walking is a favorable factor to reduce the risk of abnormal uterine bleeding in female college students. Students from the rural area, low body mass index, excessive intake of sugary beverage and weight loss may increase the risk of metrorrhagia.

Key words: Metrorrhagia, Lifestyle, Influencing factors