Women who want to avoid pregnancy can choose the following contraceptive methods according to their own situation: 1, you can choose to have sex during the safe period, according to the menstrual cycle to calculate the ovulation period, before and after the ovulation period within three days of the risk period, the other time is a safe period, this period of time to have sex with the phenomenon will not generally be pregnant, the contraceptive rate can be up to 80% or so. 2, you can use condoms to contraceptives, the same sex in the male The condom can be worn on the male penis during intercourse to avoid semen flowing into the vagina, thus achieving the effect of contraception. 3, you can also choose to take the intrauterine device, is a relatively simple, effective contraceptive method, but also more commonly used method, mainly through the impediment to the principle of fertilization to achieve contraception. 4, you can also take contraceptive pills to achieve contraceptive purposes, such as levonorgestrel tablets.