Leukorrhea is a vaginal secretion, and normal leukorrhea is milky white or white egg-white with no odor. If the amount of leucorrhea during pregnancy is more than usual and more viscous than before, but there is no abnormal change in color and smell, or the color is normal but light yellow after air-drying, it is mostly normal. As long as there is no odor and no itching, you generally do not need to worry too much and ensure personal hygiene. However, if the leucorrhea traits appear abnormal, the cause should be clarified and treated in time to prevent intrauterine infection. Common traits and causes 1, the leucorrhea is curd-like or beanbag-like: this is a typical symptom of vulvovaginal pseudomonal yeast disease, usually with severe vulvar itching or burning symptoms; 2, the leucorrhea is grayish yellow or yellowish white foamy: a typical symptom of trichomonas vaginalis, may be accompanied by vulvar itching symptoms; 3, the leucorrhea is grayish white with fishy smell: a typical symptom of bacterial vaginosis, usually The leucorrhoea contains blood: Pre-eclampsia, cervicitis, submucosal fibroids or cervical cancer can cause leucorrhoea containing blood. Pregnant women should pay attention to keep their perineum clean and change their underwear regularly to avoid infection; 2. If there are various types of sexually transmitted infections, sexual intercourse should be prohibited during the first and second trimesters of pregnancy and when both men and women are not cured; 3. If medication is needed, full communication with the doctor is required to minimize the impact on the fetus, and self-medication is strictly prohibited.