Nourishing Kidney and Fetus Repairing Pills in the process of fertility preservation treatment usually need to take 2-3 weeks, but the time is not completely mechanical, need to be adjusted according to the specific performance of the patient. In the course of fertility preservation treatment, Nourishing Kidney and Yuking Fetus Pill is mainly used for the treatment of symptoms of preterm miscarriage caused by yin deficiency and fire exuberance, with symptoms such as vaginal bleeding or with abdominal pain and lumbago. In the course of treatment, if the symptoms of preeclampsia are significantly relieved or treated, the medicine can be consolidated on that basis for 1-2 weeks before stopping. Therefore, the cycle of treatment is not the same in each patient, some patients can be treated for 3-5 days or 7-10 days, the symptoms can be relieved or significantly improved, and then consolidated for 1 week before stopping the drug. A small number of patients have longer bleeding time or preterm miscarriage, and accordingly the length of treatment is also longer. Therefore, the duration of Zi Kidney Foetus Repairing Pills should be judged according to the specific clinical manifestations of the patient or the specific triggers of miscarriage.