There are no clear scientific statistics on how many levels of pain contractions are equivalent to in a spontaneous abortion, but they are less severe than contractions after labor. When a woman has a spontaneous abortion, the uterine contractions can promote the expulsion of the gestational sac and its appendages from the uterine cavity, which may produce a certain degree of pain. There are no clear scientific statistics on the degree of pain, and it needs to be judged according to the woman’s tolerance of pain. If a woman’s pain tolerance is relatively strong and her pain threshold is relatively high, the pain caused by uterine contractions during spontaneous abortion may be relatively mild. If a woman has a poor pain tolerance and a low pain threshold, the pain during spontaneous abortion may be more pronounced. The contractions of spontaneous abortion do not last long and are not as intense as the pain of contractions after labor, so there is no need to have too much psychological burden. If the pain is more pronounced during spontaneous abortion, appropriate treatment under the guidance of an obstetrician and gynecologist is required.