Pregnant women with yellowish leucorrhea but no itching in the pubic area need to be analyzed for the specific situation, which may be a normal physiological phenomenon or due to inflammation. Common causes 1, normal physiological phenomenon: mainly related to changes in hormone levels. The estrogen as well as progesterone in pregnant women’s body will increase sharply and stimulate the uterus and vagina, leading to an increase in vaginal secretions. After the secretion is discharged from the body, it may become yellow due to oxidation, but it does not cause itching or odor. Yellowing of leucorrhea in pregnant women can also be related to the consumption of spicy and irritating foods by pregnant women. So pregnant women need to pay strict attention to local hygiene, wear loose clothing, drink more water, eat more fresh fruits and vegetables, and avoid spicy and irritating foods such as chili peppers; 2, inflammation: if the symptoms of yellowing leucorrhea are more serious and accompanied by fishy odor, then whether or not accompanied by itching, may be due to the inflammatory reaction of pathogenic bacteria infection, usually seen in bacterial vaginitis, trichomonas vaginitis and cervicitis. A routine leucorrhoea examination should be performed in a timely manner to rule out inflammation. If the infection is diagnosed, it should be treated for the specific cause under the guidance of a doctor. Pregnant women should avoid tension in their daily life, pay attention to local hygiene, scrub their pubic area with water every day, change their clothes and pants regularly, and wash their underwear preferably in the sun and boiling water to kill bacteria.