Contraceptive methods: 1, female oral contraceptives (long-acting / short-acting contraceptives, emergency contraceptives), it is recommended to take long-acting or short-acting contraceptives as prescribed by the doctor, emergency contraceptives can not be taken for a long time, can only be used occasionally. 2, male condoms contraception: contraceptive success rate, simple operation, but also to prevent some infectious diseases. 3, safe period contraception method: intercourse to avoid ovulation day five days before and four days after. If women have irregular menstruation, the contraceptive failure rate is relatively high. 4, contraceptive injection: simple progestin contraceptive injection, can be applied to lactating women. 5, subcutaneous implantation contraceptive method. 6, female placement of intrauterine device. 7, female tubal ligation, male vasectomy. 8, in vitro ejaculation method: in vitro ejaculation contraceptive method, although simple, but the failure rate is high.