Abstract: The fertility awareness-based methods（ＦＡＭｓ），a kind of natural family planning method, are often used to guide the pregnancy and contraception. FAMs are welcome by some people of childbearing age because of its pure natural, no side effect and no involvement with the moral and ethical problem. The failure rate of FAMs is about 1%-5%. FAMs are mainly applied in those pre-marital people and newly married couples in China. However, they don′t know much about FAMs, even those obstetrics and gynecology doctors, which leads to the improper use of FAMs and the high contraceptive failure rate. The mechanism, methods, and research progress of FAMs were reviewed in this paper, so as to promote the use of FAMs, to lower the unwanted pregnancy and to develop the reproductive health in China.

Key words: Natural family planning methods, Ovulation, Contraception, Reproductive health services