There are more reasons for two pregnancy stoppages, such as the embryo’s own factors, maternal factors, father’s factors, in addition to the environment may also have some influence, you need to find the main cause to avoid the next pregnancy after the abortion. The common chromosomal abnormalities are chromosome 13, 18, 21 or 22. The mother factor 1, infection: such as toxoplasma, rubella virus, cytomegalovirus and other infections of the mother, which in turn affect the embryo, resulting in two pregnancies embryonic abortion; 2, systemic diseases: such as the mother has uncontrolled diabetes, chronic hypertension and chronic nephritis, etc., may lead to two pregnancies aborted, at this time need to give priority to the treatment of the primary disease; 3, endocrine abnormalities: such as luteal insufficiency, thyroid function abnormalities, polycystic, etc. The possibility of pregnancy stopping twice is higher due to abnormal thyroid function, polycystic ovary syndrome, etc.; 4, genital development malformations: if the couple has normal chromosomes and no other primary diseases, it may be caused by congenital malformations of the female uterus, at this time, surgery can be considered. Third, paternal factors male sperm quality is low and sperm apoptosis rate is high, correlated with the occurrence of embryonic abortion twice in pregnancy. Environmental factors: prolonged exposure to X-rays, heavy metals and toxic chemicals during pregnancy may lead to abortion in both pregnancies. If both husband and wife are in good health, they should pay attention to good living habits during pregnancy preparation, don’t overwork, increase nutrition properly, eat more vegetables and fruits, quit smoking and drinking, and take folic acid. In addition, we should pay attention to keep a good mood and stay away from radiation and chemical hazards.