In general, all healthy married women of childbearing age can use the pill, but women in the following cases should not use oral contraceptives: 1, women with acute and chronic hepatitis and nephritis should not take. Because into the body of the pill are metabolized in the liver and excreted by the kidneys, if women with acute and chronic hepatitis and nephritis use, will increase the burden on the liver and kidneys. 2, people with heart disease can not be used. The estrogen in birth control pills can make the body retain water, sodium and other substances, which will increase the burden on the heart. 3. Women with high blood pressure should not use it. A small number of women will have higher blood pressure after using the pill. 4, people with diabetes and family history of diabetes should not use. Because after taking the pill, may cause a mild increase in blood sugar, so that the hidden diabetes becomes dominant. 5, hyperthyroidism of women, in the absence of a cure, it is best not to use the pill. 6, suffering from benign breast tumors, uterine fibroids and various malignant tumors of women should not use, in order to avoid adverse effects on the tumor. 7, past or present vascular embolic diseases (such as cerebral thrombosis, myocardial infarction, vasculitis, etc.) should not be used. The estrogen in the contraceptive may increase the coagulation of blood and aggravate the condition of cardiovascular disease. 8.Women suffering from chronic headache, especially migraine and vascular headache, should not use it, otherwise it will aggravate the symptoms. 9, the menstrual flow, it is best not to use. Long-term use of birth control pills can make the endometrium is atrophied, will further reduce the amount of menstruation. 10.Not suitable for women who are breastfeeding.