Whenever abortion or miscarriage occurs more than twice in a row, it is called slippery fetus, also called several abortions. This disease is similar to habitual abortion in Western medicine, and most of them occur in the same gestational month, and some of them are not in the same gestational month. Most of them have symptoms of backache and weakness before pregnancy, and no symptoms after pregnancy, or they have backache and abdominal pain or a small amount of vaginal bleeding. Those with mid- to late-term miscarriage with relaxed endocervical opening are mostly asymptomatic, with sudden bouts of abdominal pain and subsequent expulsion of the fetus. Luteal insufficiency, chromosomal abnormalities and sperm defects are often the causes of early slippage, while uterine malformation, uterine fibroids and relaxed endocervical opening are often the causes of late slippage. The main principle of treatment for slippery fetus is to supplement the deficiency, and the measures of prevention should be mastered and combined with prevention and treatment. The main treatment should be to tonify the kidneys and spleen, benefit the qi and nourish the blood, and regulate the ramifications before pregnancy, and after pregnancy and suspected pregnancy, the fetus should be preserved and not wait until the symptoms of miscarriage aura appear before preserving the fetus.