The absence of bleeding after the birth control can not be used as a criterion for judging the success of the birth control, but should also take into account the growth of the embryo, if the body does not bleed and normal development of the embryo is generally the success of the birth control. If there is no bleeding and the embryo develops normally, it is generally regarded as a success. There is also a possibility of failure, and miscarriage may occur. Fetal growth should be monitored under the guidance of the doctor, and once the embryo stops developing, abortion preservation is not considered successful. During this period, it is important not to be careless, and at the same time to improve the quality of rest and ensure the nutritional intake of the organism. Therefore, the absence of bleeding after the birth control cannot accurately determine whether the birth control is successful or not, it is recommended that women pay more attention to their own body changes during this period, regular ultrasound examination and related obstetric examination. To avoid delaying the disease, timely intervention should be made when problems are detected.