Women who bleed twice a month after taking the emergency contraceptive pill mainly consider the following three conditions: First, the patient has withdrawal bleeding after taking the emergency contraceptive pill. The second bleeding is a normal menstruation. In this case the patient does not need any treatment. Second, the patient is considered to be taking the emergency contraceptive pill, after which the first time is retreating bleeding and the second time is bleeding due to abnormal pregnancy, such as ectopic pregnancy or preterm abortion. In this case, the patient needs to check HCG, progesterone and ultrasound to determine which case the patient is in. If it is a preterm miscarriage, an abortion can be performed depending on the situation. In case of ectopic pregnancy, the patient can choose conservative drug treatment or surgery depending on the situation. Thirdly, it should be considered that the patient’s bleeding twice after taking the emergency contraceptive pill is caused by irregular menstruation due to endocrine disorder. In this case, if the vaginal bleeding is self-limiting and the bleeding is not much, it is not necessary to deal with it and observe the next menstruation. If the bleeding is heavy and prolonged, intervention is required depending on the situation.