Fertility preservation pills can be taken on an empty stomach, but for patients with poor gastrointestinal function, it is recommended to take them after meals to reduce the stimulation of the drug on the gastrointestinal mucosa. The main ingredients of Birth Control Pill are Astragalus, Radix et Rhizoma, Scutellaria, Radix Angelicae Sinensis, Rhizoma Atractylodis Macrocephalae, Radix Paeoniae Alba, Semen Cuscutae, and Rhizoma Polygonati. It is often used clinically for patients with Qi deficiency, back pain, leg pain or small amount of vaginal bleeding during pregnancy, with signs of preterm abortion. In Chinese medicine, theoretically, tonic drugs are recommended to be taken on an empty stomach, but for those with poor gastrointestinal function, it is recommended to take them after meals. In addition, pregnant women with signs of preterm miscarriage are advised to go to the hospital for regular checkups to know the status of embryonic development. If it is true that the fetus has stopped developing because of the poor quality of the embryo or inevitable miscarriage, there is no need to keep the fetus and the pregnancy should be terminated in time.