Objective To understand the state of knowledge of female college students about menstrual period and sex hygiene so as to conduct a feasible education on female reproductive health.Method To conduct a survey on knowledge about female menstrual period and sex hygiene of 625 female college students of South China University of Technology using self-designed questionnaire.Results The rates of awareness of replacing sanitary napkins every 2to 3hours during the menstrual period and water-cleaning genital everyday of college students were over 80%

while the rates of awareness of other items were all below 80%

among which the rate of awareness of proper amount of physical exercises during the menstrual period was only 48.8%.Female college students had a basic understanding of the basic health care knowledge of the menstrual period

while there were still 22.7% of those surveyed remained unclear of the causes to irregular menstruation.The female college students had rather high level of awareness about sexually transmitted diseases and sexual-physiological knowledge

and the rates were 82.1% and 80.3% respectively

followed by 76.8% awareness rate of the knowledge about clean sex life

and the one with the lowest awareness rate at only 63.3% was about the calculation of the safe period.Conclusion School authorities should strengthen the education on reproductive health of female college students.