A leukocyte count greater than 30 on a leukorrhea test for pregnant women is a sign of a bacterial infection in the vagina, either bacterial vaginosis or acute cervicitis. Normally the amount of white blood cells in the leukorrhea is relatively small. If there is bacterial vaginosis or acute cervicitis, it may lead to a significant enhancement of white blood cells in the leukorrhea. If a pregnant woman has a routine leukocyte count greater than 30, further testing is needed. 1. Bacterial vaginosis: Bacterial vaginosis is a relatively common gynecological disease, which is caused by an imbalance of the flora in the vagina. With bacterial vaginosis, there is an increase in vaginal discharge with a fishy odor and occasional vulvar itching. If pregnant women have bacterial vaginosis, it may lead to premature rupture of membranes, miscarriage or preterm labor. 2. Acute cervicitis: If there is acute cervicitis, the amount of leucorrhoea will increase significantly, it is sticky and yellowish in color, and it is prone to contact bleeding and leucocytosis in the leucorrhoea. Acute cervical inflammation during pregnancy is not treated in time, may also be upstream infection, which will adversely affect the pregnancy.