The incidence of abortion is not directly proportional to the presence of vaginal bleeding. The incidence of embryonic abortion in clinical practice is increasing, some of them are found when the treatment of preterm miscarriage and fertility preservation is ineffective, some of them are found when the ultrasound indicates embryonic abortion after pregnancy, and some of them are diagnosed only when there is no embryonic bud or heart tube pulsation as indicated by ultrasound after vaginal bleeding. In some cases, vaginal bleeding may occur only after the embryo has stopped developing for a few days. There are many clinical causes of embryonic abortion, such as sperm problems, low HCG, progesterone, abnormal thyroid function, mycoplasma infection, immune factors, environmental factors, etc. Therefore, it is recommended to have relevant tests such as HCG, progesterone, thyroid function and ultrasound once you are pregnant, and if the tests are abnormal, you should have timely treatment, especially for pregnant women who have a history of embryonic abortion, and to have early fertility preservation treatment. It is recommended to keep the pregnancy for more than two weeks after the last pregnancy to avoid the recurrence of embryonic abortion. In Chinese medicine, the main approach to embryonic abortion is to tonify the kidneys. In conclusion, embryonic abortion can occur with or without vaginal bleeding, but don’t be too nervous, and be active in the relevant examination.