Conventional contraceptives include short-acting oral contraceptives, long-acting oral contraceptives, and emergency contraceptives, also known as visiting contraceptives. Short-acting oral contraceptive pills include cotrimoxazole tablets, cotrimoxazole tablets, cotrimoxazole tablets, mafloquine, daidzein-35, and eusebio, etc. The method of administration is to take one tablet once for 21 days starting from the 5th day of menstruation, and the pill is effective in the month of administration. Long-acting oral contraceptive pills include compounded 18A long-acting oral contraceptive pill, compounded levonorgestrel 18A long-acting oral contraceptive pill, compounded ethinyl estradiol oral contraceptive pill, which can be taken by taking 2 pills for the first month and only 1 pill for each month thereafter. Emergency contraceptive pills include methandienol tablets, also known as the family visit contraceptive pill No. 1, norethindrone tablets, levonorgestrel tablets, also known as yutin, which are taken within 72 hours after intercourse, the earlier they are taken, the better the contraceptive effect, 1.5 mg orally, a single oral dose is sufficient.