The leucorrhea during pregnancy may be a normal pregnancy physiological phenomenon caused by the change of hormone level in the body, but it may also be a pathological symptom of gynecological inflammation. it is recommended that pregnant women go to the gynecology department of the hospital as soon as possible to identify the cause and take appropriate treatment according to the cause. 1. change of hormone level: the hormone level in the body of women will rise rapidly after pregnancy, which in turn promotes the secretion of vaginal mucosa and cervical mucosa, leading to an increase in leucorrhea. The leucorrhea secreted by pregnant women in this case is colorless, odorless, clear and transparent, and not accompanied by vaginal itching, which is a normal physiological phenomenon during pregnancy. In this case, pregnant women need to pay attention to personal hygiene, change their underwear frequently, wash their vulva with warm water every day to prevent inflammation; 2. Gynecological inflammation: pregnant women with gynecological inflammation during pregnancy will have more leucorrhea, leucorrhea is mostly bean curd-like or lumpy cheese like, with fishy odor, accompanied by obvious vulvar itching. In this case, pregnant women should go to the hospital gynecology department as soon as possible for routine examination of the white belt, to clarify the type of inflammation, and under the guidance of the doctor to use the right anti-inflammatory drugs for treatment.