Contraceptive pills can be divided into emergency contraceptive pills, short-acting contraceptive pills and long-acting contraceptive pills. The short-acting pill is the most widely used contraceptive pill, which can be used by most people with contraceptive needs because of its high success rate, convenience, small dose and low adverse effects. But short-acting contraceptive pills have advantages and disadvantages, some people are not recommended to use short-acting contraceptive pills, mainly related to the requirements of taking the pill, contraindications, as well as possible adverse reactions: 1. If you do not strictly follow the requirements of the pill, missed or inaccurate time to take the pill, may lead to contraceptive failure. Taking the drug should also pay attention to avoid combined use with anti-spasmodic drugs, anti-tuberculosis drugs, antibiotic drugs, etc., which may produce drug interactions and lead to contraception being affected; 2. Contraindications: Some people have systemic diseases, such as liver function damage, renal hypertension, heart disease, diabetes, etc., are not suitable for taking short-acting contraceptives to avoid aggravation. If there are lesions in reproductive organs or cancer, etc., the use of short-acting contraceptives should also be prohibited to avoid adverse reactions with therapeutic drugs. In addition, breastfeeding women taking short-acting contraceptives may have some effect on breast milk, so should be avoided; 3. Adverse reactions: short-acting contraceptives have large individual differences in adverse reactions, such as vomiting, loss of appetite, vaginal bleeding, amenorrhea and other side effects may occur during taking the pill, and it is recommended to choose other contraceptive methods when the reaction is serious. In addition, for people whose doctors do not recommend the short-acting pill, there are many other contraceptive options such as the long-acting pill, emergency contraceptive pills, condoms, IUDs, and sterilization. However, each of these methods has its own advantages and disadvantages, and people who need contraception should choose the right one according to their own situation.