“…Causes include ovum factor, maternal factor (genetic tract disorder, placental circulatory disorder, maternal disease, rhesus antagonist, maternal age, parity), paternal factor (advanced age, chronic disease), growth factor of conception, chromosomal factors, endometrial environmental factors, anemia, and external influences (drugs, economic status, education and occupation of mother). In maternal factors, in the early three semesters of pregnancy is very susceptible to abortion caused by fetal growth disorders and malformations, the age factor of pregnant women who are less than 20 years are very susceptible to abortion due to immature female reproductive organs, while pregnant women aged above 35 years susceptible to abortion due to reduced reproductive function, chromosomal abnormalities and the presence of chronic disease, and the increasing number of deliveries will be more at risk of abortion 1,8,9 . The socioeconomic and educational conditions of pregnant women have a significant impact on the risk of abortion, the risk of abortion is higher if the level of education is low and the social position is low 11 .…”