Objective: To explore the effect of reproductive health education on health literacy of hospitalized female adolescents,and to provide reference for the protection of their physical and mental health. Methods: A total of 102 female adolescents who were hospitalized in department of gynaecology from January 2019 to December 2019 were selected for reproductive health education and questionnaire survey. Results: There were 65 cases of unplanned pregnancy (4 cases of tubal pregnancy), 18 cases of gynecological tumor (1 case of ovarian malignancy), 11 cases of gynecological inflammation (1 case of tubal abscess), and 8 cases of abnormal uterine bleeding (2 cases of blood transfusion).Eighty-six patients (84.3%) were treated surgically, 7 cases had their ovaries and/or fallopian tubes removed. After reproductive health education,health literacy of menstruation and ovulation, reproductive organ tumor, gynecological inflammation(inducing factors,clinical manifestations,harmfulness), harm of premature sexual life, scientific contraception, sexually transmitted diseases(types,transmission routes,preventioe measures), abortion hazard(short-term and longterm complications) and necessity of health examination improved significantly(χ2=14.8, 25.1, 15.7, 30.6, 18.6, 25.9, 31.1, 17.8, 19.1, 15.2, 40.1, 58.6, 69.8, P<0.05). Conclusion The lack of reproductive health knowledge of female hospitalized adolescents may lead to unplanned pregnancy, tumor, inflammation and abnormal uterine bleeding.Reproductive health education can significantly improve the health literacy of female adolescents and ensure their physical and mental health.