There are many methods and applications for female contraception, and it is impossible to say which one is the best, but you can choose the one that is suitable for you. Common methods or applications include using condoms, placing a birth control ring, and taking birth control pills, and so on. 1. Use of condoms: When men and women have sex together, whether using a male condom or a female condom, it is not only effective contraception, but also prevents sexually transmitted diseases and semen allergies. 2. Placement of birth control rings: according to the size of the uterus, choose different materials and models of birth control rings, placed in the uterine cavity, mostly used for post-partum women, to prevent the fertilized egg in the uterus during coitus. 3. Take the pill: there are many types of contraceptive pills, including short-acting contraceptive pills, long-acting contraceptive pills, family visit contraceptive pills, etc., of which the most widely used is the short-acting contraceptive pill, which is taken one pill per day or for 22 consecutive days from the date of the end of menstruation. There are many other methods of contraception, such as the use of contraceptive diaphragms and contraceptive ligation. Women of childbearing age are advised to choose a suitable contraceptive method or device under the guidance of a doctor to avoid unwanted pregnancy.