The fetal sacs are white fluffy material and are collected as medical waste in hospitals after abortions and disposed of accordingly. Whether it is a spontaneous abortion, induced abortion, or medication abortion, after a miscarriage occurs in the hospital, the doctor will compare the size of the fallen sac with the results of the gynecological ultrasound report before the miscarriage, and if the size matches, the sac is proven to be intact. If only part of the pregnancy is expelled and part of it is in the uterine cavity or at the cervical os, an incomplete miscarriage may result in heavy vaginal bleeding and a curettage may be performed to prevent more bleeding. If the patient finds out the cause of the miscarriage after the abortion, the fetal sac under the miscarriage can be examined for DNA. After the operation, women need to be treated with pro-uterine contractions and anti-infection medication. The pelvic ultrasound is repeated one week after the abortion to check the recovery of the uterine cavity. Sexual intercourse and bathing are prohibited for one month. The diet should be light and easy to digest, avoiding cold, spicy and stimulating foods.