Spontaneous abortion is not entirely a bad thing from the eugenic point of view, and it can be eugenic through spontaneous abortion. Most of the causes of spontaneous abortion are chromosomal abnormalities, inflammatory diseases, genital abnormalities and endocrine disorders of pregnant women can cause spontaneous abortion. But spontaneous abortion can easily cause miscarriage is not clean also need to scrape the uterus, there is a certain damage to the body of pregnant women. After scraping the uterus will cause the endometrial lining to become thinner, and also easy to cause intrauterine infection and other situations. Therefore, after a spontaneous miscarriage, you need to go to the hospital for a comprehensive medical examination to see the physical condition, if there are chromosomal abnormalities can not be pregnant, so as not to cause fetal abnormalities after pregnancy, etc.. If you have gynecological infection, you can use anti-inflammatory drugs, such as amoxicillin and metronidazole, under the guidance of a doctor. It is also recommended to pay attention to vulva hygiene, rest and nutrition during pregnancy preparation.