Oral contraceptives are the most widely used and most effective method of contraception in the world. Since its popularization and application in China in 1964, it has been proved in practice for more than 20 years that if it is used correctly, it has more benefits and fewer drawbacks, is safe and reliable, and its contraceptive effect is as high as 99.95 per cent. In addition to effectively preventing conception, oral contraceptives have some little-known uses. (1) Regulate menstruation: Normal menstruation comes on schedule every month, so it is beautifully described as “monthly letter”. However, some women’s menstrual flow, as if experiencing a “catastrophe disaster. Some of the menstrual blood, resulting in weakness and anemia; some of the water flow, dribbling; some cycle disorders, length varies. This kind of irregular menstruation of women, in careful exclusion of organic pathology, can be applied to oral contraceptives to regulate menstruation to stop bleeding. With the use of drugs, the amount of menstrual blood can be significantly reduced, the cycle returns to normal, the body’s iron reserves increase, iron deficiency anemia can be reduced by more than half than those who do not take the drug. (2) Pain relief: the first period of a young girl is the “spring flower” of cardamom youth, and menopause after marriage is the good news of conceiving love crystals. However, throughout the ages, menstruation has been regarded as unknown, unclean things. To this day, “bad luck” is still women’s unspoken menstruation derogatory name. Indeed, menstruation brings both joy and worry to women, some women suffer from menstrual cramps, which affects life, learning and work; some women menstruation 7-14 days before the cycle of pelvic cramps, dull back pain, headache, breast swelling, weakness, fatigue, nervousness, depression and other symptoms, and after menstruation, everything is “gone up in smoke”, medically known as the pre-menstrual period. The medical term for this is premenstrual tension. Part of dysmenorrhea and premenstrual tension is related to ovulation, and inhibiting ovulation can effectively relieve pain or reduce symptoms. The main mechanism of oral contraceptives for the inhibition of ovarian ovulation, so women suffering from dysmenorrhea or premenstrual tension application of oral contraceptives, you can achieve the purpose of contraception, but also has a therapeutic effect, can be said to be twice the effort, two birds with one stone. (3) Fertilization: Ovulation: one of the most important physiological functions of the female ovary, and one of the most basic conditions for the conception of the “little angel”. Ovaries do not ovulate, sperm without a spouse, is the more common cause of ovulatory dysfunction infertility, factors affecting ovulation is very complicated, which endocrine dysfunction or disorder caused by ovarian ovulatory dysfunction infertility, can try 3-6 months of oral contraceptives, once the drug, the ovary through the “rest and recuperation”, is expected to appear a kind of “recuperation”. Once the pill is discontinued, the ovaries, through “rest and recuperation”, can be expected to show a kind of functional rebound and resume ovulation, thus making it possible to conceive and carry a baby and be happy to have a child.