Pregnant women during pregnancy leucorrhoea may be due to the body’s hormone level changes, caused by the normal physiological phenomenon of pregnancy, but may also be the pathological symptoms of gynecological inflammation, it is recommended that pregnant women as soon as possible to the hospital gynecology to find out the cause of the disease, according to the cause of the appropriate treatment.1, hormone level changes: women’s body hormone level after pregnancy will rise rapidly, which promotes the secretion of the mucous membranes of the vagina and cervical mucous membranes, resulting in an increase in the leucorrhoea. In this case, although the secretion of leukorrhea is more, but mostly colorless, tasteless, clear, transparent, and will not be accompanied by vaginal itching, is a normal physiological phenomenon of pregnancy. In this case, pregnant women need to pay attention to personal hygiene, often change underwear, wash the vulva with warm water every day, to prevent inflammation; 2, gynecological inflammation: pregnant women in pregnancy complications of gynecological inflammation will appear more leukorrhea, leukorrhea is more tofu dregs or block cheese-like, with a fishy smell, accompanied by obvious vulvar itching. In this case, pregnant women should go to the gynecology department of the hospital as soon as possible for routine examination of the leukorrhea, to clarify the type of inflammation, and under the guidance of the doctor to use symptomatic anti-inflammatory drugs for treatment.