In the clinical commonly used contraceptives are mainly divided into the following categories: 1, short-acting contraceptives, clinical use is more widespread, adverse reactions occur less, the impact on the patient is relatively small, the common drugs mainly include amaflon, oral contraceptive tablets, etc. 2, long-acting contraceptives, due to the role of maintaining a long time, the concentration of the drug is relatively large in the patient’s body is also relatively high, the emergence of adverse drug reactions, clinical use is relatively small. The clinical use of the drug is relatively small. 3, family visit contraceptive pill, the contraceptive pill used in patients visiting relatives, common drugs are family visit contraceptive pills, etc. 4, external contraceptive pills, including vaginal pessary, vaginal tablets, etc. 5, emergency contraceptive, also known as morning-after contraceptive pill, the common drugs are Yutin.