Abnormal leukorrhea in pregnancy may have some effect on the fetus. Normal leukorrhea is usually in the form of white thin paste or egg white, relatively small amount, highly viscous, without fishy odor, known as physiological leukorrhea, which has no adverse effect on women’s health. Abnormal leukorrhea after pregnancy, such as high volume, odor, yellowish color and other conditions, may have vaginitis. Having vaginitis after pregnancy may have some effects on the fetus, such as trichomonas vaginitis may lead to premature rupture of membranes, preterm labor and low birth weight babies. Bacterial vaginitis after pregnancy may also cause chorioamnionitis, premature rupture of membranes, and preterm delivery. Therefore, if abnormal leukorrhea occurs during pregnancy, it is necessary to go to the gynecology department of a public hospital in time. Gynecological internal examination plus routine leukorrhea examination will clarify whether there is vaginitis and the type of vaginitis, and according to the results of the examination, timely treatment will be carried out according to the advice of the attending doctor.