The incidence of spontaneous miscarriage is very high, and people around us are more or less likely to encounter patients with spontaneous miscarriage and embryonic abortion. Many people are confused by this: what disease do I have, how did the child stop, or do we have a blood type or genetic incompatibility as a couple? Poor nutrition? Poor environment? Most studies show that the incidence of spontaneous abortion is 10-15%, which means that there may be 10-15 spontaneous abortions in 100 pregnancies, while the incidence of biochemical pregnancy is 30%-40%, the incidence of two consecutive spontaneous abortions is 5%, and the incidence of three or more consecutive habitual abortions is 0.4-1.0%. Such a high incidence of spontaneous abortion naturally involves many couples and causes a lot of confusion and bad feelings, but in fact doctors are highly concerned only about this part of patients with 3 or more times, why? Because many studies have shown that after 1 spontaneous miscarriage, the risk of the next spontaneous miscarriage is about 15%; after 2 spontaneous miscarriages, the risk of the next spontaneous miscarriage is about 30%; and after 3 or more consecutive miscarriages, the risk of spontaneous miscarriage in the next pregnancy is 30-45%. Researchers generally agree that the higher the number of miscarriages, the higher the recurrence rate. This means that without any treatment, patients with 1-2 spontaneous abortions have more than 70% chance of having another successful pregnancy on their own, not to mention the guidance of the doctor and the appropriate measures to preserve the pregnancy. So there is no need to be too nervous and put yourself under a lot of pressure. What we are really concerned about are patients who have had 4, 5 or even 10 miscarriages, and sometimes we regret that there is nothing we can do about it. I met a patient who had 12 spontaneous miscarriages more than 10 years ago, and her family background and experience made me deeply sad for her, and at that time I had not yet graduated and was working on a related project with my supervisor. For patients with more than 3 spontaneous abortions, the tests done must be the most comprehensive, not missing any aspect that could go wrong. The pain and stress caused by spontaneous abortions is really great, so another pregnancy must be the best preparation followed by the best follow-up treatment, even so there are patients who have another miscarriage, because the natural elimination of the embryo itself with abnormal chromosomes cannot be ruled out. It is sometimes a bit annoying to keep explaining the same problems every time in the clinic, and it is difficult to achieve a satisfactory result because of the bull-headedness of such patients and the tight schedule of the clinic. So I hope that through these articles, comrades can stabilize themselves and spend more time with their doctors to discuss treatment options, rather than just venting their emotions, which is fine if done appropriately, but overly demanding will hinder the doctor’s judgment.